Question

81° - Write the measure of supplementary angle of the given angle.

Answer 1

For supplementary Angle

The Sum of two angles = 180°

so X + Y = 180°

Given Angle = X = 81°

so

81° + Y = 180°

Y = 180° - 81°

Y = 99°

So. supplementary angle of the given angle is 99°

Answer 2

Solution :

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Two angles are said to be

supplementary angles if their

sum is 180°.

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Here ,

one angle ( x ) = 81°

Let second angle = y

x + y = 180°

=> y = 180° - x

=> y = 180° - 81°

=> y = 99°

Therefore ,

Supplementary angle of 81° = y = 99°

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