Question 8
The number of angles in the given figure is
a) 3
b) 4
c) 5
d) 6

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Solution

An angle is made up of two rays starting from a common initial point called vertex.

Angles show in the figure are

1. $∠ A O B$ = $40^{\circ}$

2. $∠ B O C$ = $20^{\circ}$

3. $∠ C O D$ = $30^{\circ}$

4. $∠ A O B$ + $∠ B O C$ = $40^{\circ}$ + $20^{\circ}$ = $60^{\circ}$

5. $∠ A O B$ + $∠ B O C$ + $∠ C O D$ = $40^{\circ}$ + $20^{\circ}$ + $30^{\circ}$ = $90^{\circ}$

6. $∠ B O C$ + $∠ C O D$ = $20^{\circ}$ + $30^{\circ}$ = $50^{\circ}$

Therefore, there are 6 angles.

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Question 8 The number of angles in the given figure is a) 3 b) 4 c) 5 d) 6

Question 8
The number of angles in the given figure is
a) 3
b) 4
c) 5
d) 6