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alexira [117]
2 years ago
7

Find the indicated unknown angle measure.​

Mathematics
1 answer:
dem82 [27]2 years ago
4 0

Answer:

138 degrees

Step-by-step explanation:

Angle b and the 42 degree angle right next to it are supplementary angles. That means that 42+b=180

b=138

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Step-by-step explanation:

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