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Maths
Summary
3D shapes are made up of vertices (corners), faces and edges. 3D shapes can be regular or irregular.
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:
SHape Name | Properties | Diagram |
Cube | Each face is a square. | |
Regular tetrahedron | Each face is an equilateral triangle. | |
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:
Shape Name | Properties | Diagram |
Cuboid | Each face is a quadrilateral. | |
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. | |
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
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