3 years ago

∠A and ∠B supplementary and vertical angles. What is m∠B

Mathematics

1 answer:

Nuetrik [128]3 years ago

5 0

Answer:

90°

Step-by-step explanation:

Supplementary means they add to 180°. Vertical angles are congruent, so they must both be 180°/2 = 90°.

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