Shapes
Sides and vertices
Definition Side
A side is a straight line on a shape.
Definition
A vertex is a point where two sides meet.
Classification
Definition Classification
| Name | Shape | Side Number | Vertex Number |
| Circle |  | 0 | 0 |
| Triangle |  | 3 | 3 |
| Square |  | 4 (all the same) | 4 |
| Rectangle |  | 4 (2 longer, 2 shorter) | 4 |