# Properties of prisms

I can appreciate that all prisms have two congruent polygonal parallel faces (bases) with parallelogram faces joining the corresponding vertices of the bases.

# Properties of prisms

I can appreciate that all prisms have two congruent polygonal parallel faces (bases) with parallelogram faces joining the corresponding vertices of the bases.

## Lesson details

### Key learning points

- Prisms are 3D shapes with a cross-section that is a uniform polygon.
- All prisms will have a pair of parallel faces that are congruent.
- This polygon cross section is often used to name the prism.
- The sides connecting the bases are parallelograms.

### Common misconception

I can tell a 3D shape is a prism because the 2D faces on both ends are congruent.

The cross-sectional face must be the same throughout, not just at the two ends of the shape. Also, the two end faces must be parallel.

### Keywords

Prism - A prism is a polyhedron with a base that is a polygon and a parallel opposite face that is identical.

Cross-section - A cross section is a 2D face made from cutting straight through any plane of a 3D object.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Starter quiz

### 6 Questions

3

4

5

8

15

6

9

5

## Exit quiz

### 6 Questions

16

24

8

2

10