3 years ago

Angle ABD and angle BDE are supplementary. Find the measures of both angles.

1 answer:

3 0

By definition of supplementary angles,
∠ABD + ∠BDE = 180
5x + 17x - 18 = 180
22x = 198
x = 9

∠ABD = 5(9) = 45°
∠BDE = 180 - 45 = 135°

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