In trapezoid ABCD (AD || BC) angle A is 2 times less than angle B. Find the value of angle B.

univerkov | December 10, 2020 | education

Since the corners are one-sided, they add up to 180 degrees.
Hence, one angle A is equal to x, angle B is equal to 2x
Let’s get the equation and solve it:
X + 2x = 180
3x = 180
X = 180 ÷ 3
X = 60
Angle B = 2 * 60 = 120 degrees

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