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How to Describe 3D Shapes

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- Three dimensional,

or 3D shapes, are shapes that take up space.

They have three dimensions,

length, width and height.

The world is made up of 3D shapes.

They are all the things we can hold.

Your book is a 3D shape,

so is your soccer ball,

as well as your birthday presents.

Can you see how they each take up space?

There are some features that are common

across three dimensional shapes.

These features include faces,

edges and corners.

The flat surfaces of a shape are called faces.

No, not that type of face!

The edge of a 3D shape is the line

where two of its surfaces meet.

And the corner is where

two or more edges meet.

A corner can also be called a vertex.