Question

One of the anhles of a pairs of supplementary angles is 120°. Find the ratio of the pairs of supplementary angles.

Answer 1

one of the supplementary angle = 120°

other supplementary angle = ?

we know that the sum of supplementary angles is 180°

so,120° + x = 180°

x = 180° - 120°

x = 60°

ratio of angles = 60 : 120

= 1 : 2

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