# Different types of prisms and pyramids: General Data Protection Regulation(GDPR) Guidelines BYJU’S

Posted on## Pyramids, prisms, cylinders and cones (Pre-Algebra, Area and Volume) – Mathplanet

The surface area is the area that describes the material that will be used to cover a geometric solid. When we determine the surface areas of a geometric solid we take the sum of the area for each geometric form within the solid.

The volume is a measure of how much a figure can hold and is measured in cubic units. The volume tells us something about the capacity of a figure.

A prism is a solid figure that has two parallel congruent sides that are called bases that are connected by the lateral faces that are parallelograms. There are both rectangular and triangular prisms.

To find the surface area of a prism (or any other geometric solid) we open the solid like a carton box and flatten it out to find all included geometric forms.

To find the volume of a prism (it doesn’t matter if it is rectangular or triangular) we multiply the area of the base, called the base area B, by the height h. {2}\cdot h$$

A pyramid consists of three or four triangular lateral surfaces and a three or four sided surface, respectively, at its base. When we calculate the surface area of the pyramid below we take the sum of the areas of the 4 triangles area and the base square. The height of a triangle within a pyramid is called the slant height.

The volume of a pyramid is one third of the volume of a prism.

$$V=\frac{1}{3}\cdot B\cdot h$$

The base of a cone is a circle and that is easy to see. The lateral surface of a cone is a parallelogram with a base that is half the circumference of the cone and with the slant height as the height. This can be a little bit trickier to see, but if you cut the lateral surface of the cone into sections and lay them next to each other it’s easily seen**.**

The surface area of a cone is thus the sum of the areas of the base and the lateral surface:

$$\begin{matrix} A_{base}=\pi r^{2} &\, \, and\, \, & A_{LS}=\pi rl \end{matrix}$$

$$A=\pi r^{2}+\pi rl$$

**Example**

$$\begin{matrix} A_{base}=\pi r^{2}\: \: &\, \, and\, \, & A_{LS}=\pi rl\: \: \: \: \: \: \: \\ A_{base}=\pi \cdot 3^{2} & & A_{LS}=\pi \cdot 3\cdot 9\\ A_{base}\approx 28. {3}$$

Find the volume of a cone with the height 5 and the radius 3.

Find the surface area of a cylinder with the radius 4 and the height 8

## What Are Some Differences Between Prisms And Pyramids?

### 21 Answers

**Anonymous** answered

A prism is formed when the joining edges and faces are at a perpendicular angle to the base faces. This only applies if the faces that are joined are rectangular — this is called a right prism. If it is the case that the faces that join are not perpendicular to the base faces it is called an oblique prism.

Pyramids are a different shape and are with a three-dimensional polyhedron face where the bases are triangular and meet at one point, called the apex. The base of a pyramid can be any polygon though it is usually a square or a triangle touching three or four non-base faces.

A prism has many sides whereas the pyramid has five sides including a flat shape underneath.

A prism has three rectangular sides and 2 of these 3 rectangular surfaces are identical in size. Any rectangular side can work as an end.

A pyramid has a base and a connecting point, while a prism has a base, together with a translated copy of it.

The sides or faces formed in a pyramid are always triangles, while in a prism, they normally form a parallelogram.

A pyramid is often regarded as a solid building, while a prism is referred to something that is transparent, and can refract, reflect or split light.

This is a good visual representation of the differences visually www.slideshare.net/guest11dd19/prisms-pyramids

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**Anonymous** answered

A difference between a prism and a pyramid is that a prism is a shape with 2 congruent bases and a pyramid is a shape with one base.

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**Anonymous** answered

Pyramid: Pyramid has four sides and they are triangular in shape. Only 1 side is square in shape which is the base.

Prism: Prism has three rectangular sides and 2 of these 3 rectangular surfaces are identical in size. Any rectangular side can work as a base.

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**Anonymous** answered

The difference between Prisms and Pyramids are that Pyramids have only one possible base and all of the prisms faces can be bases.

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**Anonymous** answered

The difference between a pyramid and prism (in geometry) is that a pyramid has one base and lateral faces that are triangles where prisms have two congruent bases and lateral faces that are parallelograms.

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**Anonymous** answered

Prisms are connected by rectangles and Pyramids are connected by triangles. Also Prisms have two bases and pyramids have one base. Hope my answer helps! :-]

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**Anonymous** answered

Similarities:

• They both have many different kinds.

• They both have edges, vertices and faces to make the shape.

Differences:

• A pyramid only has one possible base.

• A pyramid joins to a point.

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**Anonymous** answered

Prisms are solids whose top and bottom ends are equal and parallel, but pyramids are solids with flat sides which slope to a point called the apex. NOUNA

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**Anonymous** answered

Pyramids

— 1 base

— opposite ends on the bottom are parallel to each other

— Used for Egyptian temples

— All sides join at the top vertex

— triangular sides

Prisms

— 2 Bases

— has a vertex

— Rectangular sides

— Opposite ends are parallel to each other

Both

— Can be used for roofs

— Can have many sides

— Can be used in skyscrapers

— Both have many different kinds

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**Anonymous** answered

Prisms: Lateral sides are always rectangles.

Pyramids: Lateral sides are always triangles.

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**Anonymous** answered

A prism has 2 bases and a pyramid has 1

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**johntavis king** answered

Prisms have many sides and and a pyramid has 5 side counting the base of the pyramid

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**Anonymous** answered

The difference between prisms & pyramids is:

Prisms:- Pyramids:-

-solid -have triangular faces

-they have faces -they have 5 faces

-all edges are connected -all the faces meet at a point(apex)

-they have vertices -they have a square base

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**Anonymous** answered

%#*because a prism has two bases & a pyramid only has one base*#%

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**Anonymous** answered

I have a table that shows the area of the 4 largest states in the United States and their ranking. How do I find the difference between the area of the 4th ranked state and the 1st ranked state?

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**Anonymous** answered

I also don’t understand the difference between a prism and a pyramid. Can someone explain to me?

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**Anonymous** answered

If you cut a prism in half it stays the same shape but if you cut a pyramid in half it doesnt stay the same shape

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**Anonymous** answered

Prism:they only had one base pyramid:they had 2 or more base

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**Anonymous** answered

They both have angles.

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**Anonymous** answered

It is a peice of popcorn

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**Anonymous** answered

I don’t know I’m doin my math hw I need answeres or else the teach goin 2 gime detention

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#### You might also like…

### Answer Question

## Pyramid vs. Prism: Difference and Comparison

People often come across pyramids and prism-shaped objects, but get confused about their shape. The properties and characteristics of these forms in everyday life are unknown.

Science quiz

Test your knowledge on science-related topics

1 / 10

Quartz crystals commonly used in quartz clocks, etc., chemically

silicon dioxide

germanium oxide

mixture of germanium oxide and silicon dioxide

sodium silicate

2 / 10

washing soda is a generic name

3 / 10

Which of the following is used in pencils?

Graphite

silicon

Carbon

Phosphorous

4 / 10

What is the scientific name of a person?

Mangifera Indica

Tiger wound

Homo sapiens

human species

5 / 10

What is the function of root hair cells?

Absorb oxygen

Absorb water

To absorb carbon dioxide.

For the absorption of water and minerals/nutrients.

6 / 10

Which of the following is not a synthetic fiber?

Nylon

Silk

Available in four great colors to give people more options to match their sportswear.

acrylic

7 / 10

Substances that react chemically are called __________.

Reagents

Products

Catalysts

8 / 10

What is the fuel for the Sun?

helium

hydrogen

oxygen

carbon dioxide

9 / 10

An atom is considered __________ when the number of protons and electrons is equal.

Positive

Negative

Neutral

10 / 10

Chemical formula of water

NaAlO2

h3O

Al2O3

CaSiO3

your account

900 02 They are often confused with each other.

The pyramid is a three dimensional structure known to have a single base which is polygonal in shape and has triangular auxiliaries connected at a vertex known as the apex. A prism, on the other hand, is a 3D structure with two bases and rectangular sides.

## Main conclusions

- Pyramids are three-dimensional figures with a polygonal base and triangular faces converging at one point; prisms are also three-dimensional figures with a polygonal base, but their faces are rectangular and parallel.
- Pyramids are commonly used in architecture and have a symbolic or decorative purpose; prisms can be used in optics, geometry, or as building blocks in construction.
- Pyramids have a point or apex, while prisms have two identical parallel faces at opposite ends.

** Pyramid vs Prism **

The pyramid is a three-dimensional figure with a polygon at the base and triangular faces converging at the top. A prism is a three-dimensional figure with two parallel bases, congruent polygons, and rectangular sides connecting the bases.

** Comparison table **

9 0169

Comparison parameter |
pyramids |
Prisms |
---|---|---|

Basic definition |
A pyramid is a three-dimensional polyhedral-shaped structure with only one polygonal base and triangular sides. | A prism is a three-dimensional polyhedron characterized by two polygonal bases and rectangular sides perpendicular to the base. |

Number and shape of bases |
The pyramid has only one base, which is polygonal in shape. | The prism consists of two bases, which are also polygonal. |

Shape of the sides |
The sides of the pyramid are triangular, connected at a point known as the apex. | The sides of the prism are always rectangular and perpendicular to the base. |

Top |
The presence of the top characterizes the pyramid. | The prism does not have a vertex. |

Type |
Depending on the shape of their base, there are different types of pyramids, such as triangular pyramid, hexagonal pyramid, pentagonal pyramid, etc. | In prisms, the appearance is determined by the shape of the base. Some types are triangular prism, pentagonal prism, hexagonal prism, etc. |

** What is a pyramid? **

The pyramid is a three-dimensional polyhedral structure with only one polygonal base. It always has triangular sides.

All sides of a pyramid always meet at a point known as the apex or pinnacle. A pyramid always has its top directly above the center of its base.

There are different types of pyramids depending on the shape of their bases. Some of them are triangular pyramid, pentagonal pyramid, hexagonal pyramid and so on.

One of the most important real examples of pyramids is the great pyramids of Giza in Egypt. They are characterized by the fact that most of their weight lies close to the ground.

** What is a prism? **

A prism is also a three-dimensional polyhedral structure, it always has two bases facing each other, and the shape of these bases is polygonal. All sides of the prism are rectangular.

These sides are connected to at least two adjacent sides perpendicular to the base. However, if the sides are not perpendicular to the base, it is called an oblique prism.

The prism does not have a vertex.

A prism is usually made of glass and is therefore transparent. It has polished surfaces that aid in the refraction of light located on one side of the prism and seen from the other side.

In addition, the cross section of the prism is the same on all sides.

The shape of its base determines the type of prism. Some examples are triangular prism, pentagonal prism, hexagonal prism, etc. The prism is of paramount importance in geometry and optics.

The prism plays a vital role in the study of the reflection, refraction and splitting of light.

** Main differences between pyramids and prisms **

- Pyramids and prisms are three-dimensional structures in the form of polyhedra; the main difference lies in their base.
- The pyramid has only one base; conversely, two bases characterize a prism.
- The base of the pyramid and prism is polygonal.
- The sides of the pyramid are always triangular; conversely, the sides of a prism are always rectangular.
- The sides of the pyramid are inclined at an angle to the base; on the other hand, the sides of the prism are perpendicular to the base.
- All sides of the pyramid always connect at one point; on the other hand, all sides of a prism do not necessarily meet at the same point.
- The point of connection of all sides of the pyramid is called the apex or top, and it is located vertically above the center of the base, while there is no such point in the prism.
- The type of pyramid or prism depends on the shape of its base.
- A distinction is made between a triangular pyramid or prism, a pentagonal pyramid or prism, a hexagonal pyramid or prism, etc.
- The pyramid is associated with the realm of geometry; conversely, the prism is related to the field of geometry and optics.

** Recommendations **

- https://www.sciencedirect.com/science/article/pii/S1386947708002488

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## Various types of polyhedra. Their images. Sections, developments of polyhedra. Surface area | Outline of the lesson in geometry (grades 10, 11):

Practical work

Various types of polyhedra. Their images. Sections, developments of polyhedra. surface area.

Purpose of work:

Correct knowledge, skills and abilities on the topic: «Polyhedra and their surface areas. »

1. Necessary theoretical material

Polyhedron.

Polyhedron — a geometric body bounded by flat polygons. The polygons bounding a polyhedron are called faces, their sides are edges, and their vertices are the vertices of the polyhedron. Segments connecting any two vertices that do not lie on the same face are called the diagonals of the polyhedron.

We will consider only convex polyhedra, i.e. those that are located on one side of each of its faces.

Prism.

A prism is a polyhedron in which two faces are equal polygons with respectively parallel sides, and all other faces are parallelograms. Polygons lying in parallel planes are called the bases of the prism; the perpendicular dropped from some point of one base to another is called the height of the prism. Parallelograms are called lateral faces of the prism, and their sides, connecting the corresponding vertices of the bases, are called lateral edges. In a prism, all side edges are equal, like segments of parallel lines enclosed between parallel planes. |

A plane drawn through any two side edges that do not belong to the same face of the prism is called a diagonal plane.

A prism whose lateral edges are perpendicular to the bases is called straight, otherwise it is called oblique. A right prism whose bases are regular n-gons is called regular.

Parallelepiped.

A parallelepiped is a prism whose bases are parallelograms.

A right box is called rectangular if its bases are rectangles.

Three edges of a cuboid converging at one vertex are called its dimensions.

A rectangular parallelepiped having equal dimensions is called a cube.

Properties of faces and diagonals of a parallelepiped.

- Theorem: Opposite faces in a parallelepiped are equal and parallel.
- Theorem: In a parallelepiped, all four diagonals intersect at one point and bisect at it.
- Theorem: In a rectangular parallelepiped, the square of any diagonal is equal to the sum of the squares of its three dimensions.

Pyramid.

A pyramid is a polyhedron in which one face, called the base, has some kind of polygon, and all other faces, called side faces, are triangles that have a common vertex. The common vertex of the side triangles is called the vertex of the pyramid, and the perpendicular dropped from the vertex to the base is called its height. |

The plane drawn through the top of the pyramid and some diagonal of the base is called the diagonal plane.

Pyramids are triangular, quadrangular, etc., depending on whether the base is a triangle, quadrilateral, etc. A triangular pyramid is called a tetrahedron; all four faces of such a pyramid are triangles.

A pyramid is called regular if, firstly, its base is a regular polygon and, secondly, its height passes through the center of this polygon. In a regular pyramid, all side edges are equal to each other. Therefore, all the side faces of a regular pyramid are equal isosceles triangles. The height of the side face of a regular pyramid is called apothem.

The part of the pyramid enclosed between the base and a cutting plane parallel to the base is called a truncated pyramid. Parallel polygons are called bases, and the distance between them is called height. A truncated pyramid is called regular if it is part of a regular pyramid.

Side surface of prism and pyramid.

- Theorem: The lateral surface of a prism is equal to the product of the perpendicular section and the lateral edge.

Consequence: The lateral surface of a straight prism is equal to the product of the perimeter of the base and the height.

- Theorem: The lateral surface of a regular pyramid is equal to the product of the perimeter of the base and half the apothem.
- Theorem: The lateral surface of a regular truncated pyramid is equal to the product of half the sum of the perimeters of both bases and the apothem.

- Examples

- The area of the lateral surface of a regular triangular prism is equal to the area of the base. Calculate the length of the side rib if the side of the base is 7cm

Solution.

The area of a regular triangle at the base of the prism is found by the formula:

According to the condition of the problem a = 7 cm

Since the area of the prism face in this case will be equal to 7h, where h is the height of the side edge, the number of faces is three, then

49√3 / 4 = 3 * 7h

49√3 / 4 = 21h

whence

h = 7√3 / 12

Answer: the length of the side edge of a regular triangular prism is 7√3 / 12

- Find the area of a regular triangular prism whose base side is 6 cm and its height is 10 cm.

Solution.

The area of a regular triangle at the base of the prism is found by the formula:

According to the condition of the problem a = 6 cm, from where S = √3 / 4 * 36 = 9√3

0003

The area of each of the faces will be equal to 6 * 10 = 60, and since there are three faces, then 60 * 3 = 180

Thus, the total surface area of the prism will be equal to 180 + 18√3 ≈ 211, 18 cm2.

Answer: 180 + 18√3 ≈ 211.18

- In a regular quadrangular prism, the base area is 144 cm2 and the height is 14 cm. Find the diagonal of the prism and the total surface area.

Solution.

Regular quadrilateral is a square.

Accordingly, the side of the base will be equal to √144 = 12 cm.

Whence the diagonal of the base of a regular rectangular prism will be equal to

√( 122 + 122 ) = √288 = 12√2The diagonal of a regular prism forms a right triangle with the diagonal of the base and the height of the prism. Accordingly, according to the Pythagorean theorem, the diagonal of a given regular quadrangular prism will be equal to:

√ ( ( 12√2 )2 + 142 ) = 22 cmAnswer: 22 cm Calculate the perimeter of the base of the pyramid.

Solution.

An equilateral triangle is an equilateral triangle. Accordingly, the side face of the pyramid is an equilateral triangle.

The area of an equilateral triangle is:

Respectively:

16√3 = a2 √3 / 4

16 = a2 / 4

a2 = 64

a = 8 cm

The base of a regular triangular pyramid is a regular (equilateral) triangle. Thus, the perimeter of the base of the pyramid is

8 * 3 \u003d 24 cm

Answer: 24 cm.

- Tasks for practical work

3 cm. Find the total surface area.

2) The sides of the base of a regular quadrangular pyramid are 72, the side edges are 39. Find the total surface area of this pyramid.

3) Find the area of the side surface of a straight prism, at the base of which lies a rhombus with diagonals equal to 16 and 30, and a side edge equal to 40.

4) The side of the base of a regular quadrangular prism ABCDA1B1C1D1 is 3, and the side edge is 4. Find the area of the section that passes through the side of the base AD and vertex C1.

5) The base of the correct quadrangular prism of AVSDA1B1S1D1 is 4, and the lateral edge is 5. Find the cross -sectional area that passes through the rib AA1 and the top of S.

6) in the correct four -legged prism, the area of the base is 144 cm2, and the height of 14 cm.