Year 4

# Identifying the properties of constructed 3-D shapes

Year 4

# Identifying the properties of constructed 3-D shapes

## Slide deck

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## Lesson details

### Key learning points

- In this lesson, we will recap the key mathematical vocabulary used to describe 3D shapes and use that vocabulary to identify the properties of constructed 3D shapes. We will use the terms face, edge, vertex and apex.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

What is similar about triangular-based pyramids and triangular prisms?

Both shapes have 4 vertices.

Both shapes have 5 faces.

Both shapes have 6 edges.

Q2.

What is similar about spheres and cones?

Both shapes have 2 edges.

Both shapes have no edges.

Both shapes have no vertices.

Q3.

What is similar about triangular prisms and cuboids?

Both shapes have 5 faces.

Both shapes have 6 faces.

Both shapes have at least some triangular faces.

Q4.

How many vertices does a square-based pyramid have?

4

6

8

Q5.

What are the properties of a hexagonal prism?

10 vertices, 16 edges and 6 faces

4 vertices, 12 edges and 2 faces

8 vertices, 14 edges and 2 faces

### 5 Questions

Q1.

1. What is the definition of the 'apex' of a 3-D shape?

An apex is a flat or curved surface of the 3-D shape.

An apex is the corner of a 2-D shape.

An apex is the corner where edges of the 3-D shape meet.

Q2.

What is the difference between a square-based pyramid and a triangular-based pyramid?

A square-based pyramid has 6 faces whereas a triangular-based pyramid has 5 faces.

A square-based pyramid has an apex whereas a triangular-based pyramid does not have an apex.

A square-based pyramid has one curved face whereas a triangular-based pyramid only has flat faces.

Q3.

What is unique about a sphere?

A sphere has no faces, 1 edge, and no vertices.

A sphere has no faces, no edges and 1 vertex.

A sphere has no faces, no edges and no vertices.

Q4.

Which of the following 3-D shapes has more faces than vertices?

A cube

A square-based pyramid

A triangular-based pyramid

Q5.

Which of the following 3-D shapes has faces which are always the same shape?

Cuboid

Hexagonal prism

Triangular prism