Question 827666: Angle A is (x+10) Angle Angle B is (2x) Angle C is (2x-30) What is the measure in degrees of angle B? Answer by LinnW(1048) (Show Source):
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Angle A is (x+10) Angle Angle B is (2x) Angle C is (2x-30) What is the measure in degrees of angle B?
The three angles total 180 degrees.
(x+10) + (2x) + (2x-30) = 180
5x - 20 =180
add 20 to each side
5x = 200
divide each side by 5
x = 40
Since B = 2x, B = 80
