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riadik2000 [5.3K]
3 years ago
9

I'll give brainliest Your options are:A. 8B. 14C. 16D. 20​

Mathematics
1 answer:
love history [14]3 years ago
4 0

Answer:

B.

Vertical angles are the same angles of each other.

14 + 7 = 21

3(14) - 21 = 21

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