Chapter overview Maths

Number and place value

Multiplication and division

Fractions

Measurement

Geometry - properties of shapes

Geometry - position and direction

Statistics

Maths

# Identifying 3D shapes from 2D shapes 0%

Summary

# Identifying 3D shapes from 2D shapes

## ​​In a nutshell

3D shapes are made up of vertices (corners), faces and edges. 3D shapes can be regular or irregular.

## Regular 3D shapes

For regular 3D shapes, each face is the same shape, which is a regular polygon. Regular 3D shapes look the same from different sides. Below is a table of examples of regular 3D shapes:

#### Diagram

Cube

Each face is a square.

Regular tetrahedron

Each face is an equilateral triangle.

## Irregular 3D shapes

For irregular 3D shapes, different faces can be different shapes. Irregular 3D shapes may look different from different sides. Below is a table of examples of irregular 3D shapes:

#### Diagram

Cuboid

Cone

Has a circular base, and then comes to a point at the top.

Square-based pyramid

Has a square base and triangular sides meeting at a point.

Triangular prism

Has triangular faces at the ends and rectangular sides.

## Want to find out more? Check out these other lessons!

2D shapes: Types and properties

3D shapes: Types and properties

FAQs

• Question: What is a 3D shape?

Answer: A 3D shape is a solid object made up of vertices, faces and edges.

• Question: What are the properties of an irregular 3D shape?

Answer: For an irregular 3D shape, different faces can be different shapes. An irregular 3D shape may look different from different sides.

• Question: What are the properties of a regular 3D shape?

Answer: In a regular 3D shape, each face is the same shape. That shape is a regular polygon. A regular 3D shape looks the same from different sides.

Theory

Exercises