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Example. Here are some 4-sided shapes.
a. Which types of polygons are these?

b. In what ways are a rectangle
and a square different from these
shapes?

Solution. a. All the 4-sided polygons are called quadrilaterals.
b. All the angles of a rectangle and a square are right angles, but the

angles of these quadrilaterals are acute and obtuse angles.

Exercise 7D

1. find the number of sides of the following polygons.

a. b. c.

___________ ___________ ___________

2. identify and colour the polygons.

a. b. c. d.

e. f. g. h.

3. identify which types of polygons are given below. Also, name the sides of these
polygons.

N A
M
a. A B b. X c. d.
B E

Y O
D C Z P C D

___________ ___________ ___________ ___________

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Geometry