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Corners, edges and faces

A solid shape is a shape you can hold in your hand, for example a cube.
Every solid shape has corners (vertices), edges (lines) and faces (sides).

Example: How many edges does a rectangular prism have? Answer: 12
A rectangular prism has 8 corners, 12 edges and 6 faces.
Count calmly: 4 edges on top, 4 on the bottom and 4 upright edges, that makes 12 together.

Write your number in the box.
The numbers filled in show the solution.

Example

How many edges does a rectangular prism have?12
How many faces does a rectangular prism have?6

For parents

What does this exercise practice?

Recognize and describe solid shapes by their corners, edges and faces.

Common pitfalls

Corners, edges and faces are easily mixed up. Corners are points (vertices), edges are lines, faces are the flat sides.

How to practice at home

Take a box (a rectangular prism) or a game die and count its corners, edges and faces together with your finger.

Related: Faces of solids, Cube Net

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