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In trapezoid ABCD, sides AB and CD are parallel, angle A =2* angle D, and C = 3*angle B. Find angle B.

Lightning Nov 10, 2018

edited by Lightning Nov 10, 2018

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Best Answer

Since the sides are parallel, angles B and C add to 180 degrees I(supplementary)

C= 3B C+B = 180 Substitute 3B + B = 180 4B = 180 B = 45 degrees

ElectricPavlov · Answer 1 · 2018-11-11T04:00:30

Since the sides are parallel, angles B and C add to 180 degrees I(supplementary)

C= 3B C+B = 180 Substitute 3B + B = 180 4B = 180 B = 45 degrees