An angle is twice its supplement. find the measure of the angles

120°

Step-by-step explanation:

Let the angle be x then twice it's supplement is 2(180 - x)

Equating the two gives

2(180 - x) = x ← distribute the parenthesis on the left side

360 - 2x = x ( subtract x from both sides )

360 - 3x = 0 ( subtract 360 from both sides )

- 3x = - 360 ( divide both sides by - 3 )

x = 120

The angle is x = 120°

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

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