Question

EXERCISE 15B
75
1. In the figure given alongside, find the measure of angleACD.​

Answer 1

Answer:

The answer is = 120

Step-by-step explanation:

exterior angle = sum of interior angles

Let the 3rd angle= x.

75 + 45+ x = 180(A.S.P.)

120 + x = 180

x = 180 - 120

x = 60

60 + exterior angle = 180 (Angle on straight line)

Exterior angle = 180 - 60

Exterior angle = 120.

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