This document defines and describes basic 2D shapes including rectangles, circles, triangles, and squares. Rectangles have four straight sides and four corners with two short sides and two long sides. Circles have one curved side and no corners. Triangles have three straight sides and three corners. Squares have four equal length straight sides and four corners.

1. 2D shapes How many can you recognise?

2. rectangle A flat shape. Have 4 straight sides Have 4 corners Have two short sides and two long sides.

3. circle A flat shape Have 1 curved side Have no corners

4. triangle A flat shape Have 3 straight sides. Have 3 corners

5. square A flat shape Have 4 straight sides. Have 4 corners All sides are the same length