Question

two angles forming a linear pair are in the ratio 4:5 find the measureof angle

Answer 1

Let the ratio be x

4x+5x=180°(according to the question)

9x=180°;

x=180°÷9

=20°

Therefore,

Angle=4x=4×20°=80°

Second angle=5x=5×20°=100°

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