Question

if APB is a straight line find x
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Answer 1

APB is a straight line =180°

so

3x+2x=180°

5x=180°

x=36°

Answer 2

As APB is straight line

sum of both angle is 180

there fore :

3x +2x =180

5x=180

x=36

3x=36×3

=108

2x =36×2

=72