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