The measure of an angle is twice the measure of its supplementary angle
Question:

The measure of an angle is twice the measure of its supplementary angle. Find the measure of the angles?

Solution:

Let the angle in case be ‘x’

The supplementary of a angle x is (180 – x)°

Applying given data:

x = 2 (180 – x)

x = 360 – 2x

3x = 360

x = 360/3

x = 120

Therefore the value of the angle in case is 120°

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