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erica [24]
2 years ago
6

What is the answer ​

Mathematics
1 answer:
Igoryamba2 years ago
8 0

Answer:

∠B = 60°

Step-by-step explanation:

They are supplementary angles, which means they add up to 180°.

∠B + ∠A = 180

? + 120 = 180

? = 180 - 120

? = 60°

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