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9966 [12]
3 years ago
10

What is the measure of angle B?

Mathematics
1 answer:
Talja [164]3 years ago
8 0

Answer:

61.8°

Step-by-step explanation:

102.8°+15.4°+B =180°

118.2°+B =180°

B=180°-118.2°

B = 61.8°

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