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What is the measure of angle B? Answer 62 32 120 31
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31
the external angle = sum of two opposite internal angles ie 5x-35 = 58 + 2x solve for x angle B = 2x
x=31 so B = 62 degrees
answer is 31
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consider d unknown angle as y, so d sum of a triangle n alternate angle is 180 so 2x+y=122 n 5x+y=215 solve this linear eqn u'll get d answer 31
sorry value of x=31 n assumed y ie b=60
x=31, 2x=62
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