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A flat figure is a figure that possesses two dimensions (length and width).

A **solid** is a figure that possesses three dimensions (length, width and height).

Solid forms with particular geometric properties (symmetry, face and angle congruencies) are presented here.

**Select** a representative for each solid.

- Recognize a solid and identify its characteristics
- Understand the shape of a solid

- apices
- ball
- block
- cone
- cube
- cylinder
- developpement
- edges
- faces
- net
- polygon
- polyhedra
- polyhedral
- prism
- pyramid
- solids
- sphere

Solids are differentiated by form and the number of faces they possess. They can be classified into many groups with or without any common characteristics. Two large families of solids group those…