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mihalych1998 [28]
3 years ago
8

Need help pleaseeee.

Mathematics
1 answer:
Serggg [28]3 years ago
4 0

Answer:

m angle B=141

Step-by-step explanation:

a 7 sided shape has 900 total degrees

subtract all the known angkes to find your answer

900-90-148-142-130-129-120=141

hope this helps :)

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