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3 years ago

What’s the measure of B

Mathematics

2 answers:

Ahat [919]3 years ago

5 0

Answer: X = 109, 109-20=89

dexar [7]3 years ago

4 0

Answer:

∠B = 89°

Step-by-step explanation:

supplementary angles are two angles whose sum is 180°

∠A + ∠B = 180°

x - 18 + x - 20 = 180

x + x = 180 + 18 + 20

2x = 218

x = 218/2

x = 109

∠B = 109 - 20 = 89

∠B = 89°

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3 years ago

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