Coach- the triangle has sides and corners;
- the square has equal sides and corners;
- the rectangle has sides and corners, with opposite sides equal (a stretched square);
- the circle is perfectly round: no sides, no corners.
উদাহরণ
Example 5.2 (Tilted shapes are still shapes)
A square standing on its corner is still a square — four equal sides, four corners — even if it looks like a kite. Turning a shape does not change what it is.
Example 5.3 (Shape hunt)
In the classroom: the board is a rectangle, the clock a circle, a folded napkin can be a triangle, some windows are squares. Real objects are not perfect shapes, but their faces are close to them (solids and their faces return in Chapter 11).