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abruzzese [7]
4 years ago
9

How do you solve this proof? help please. thank you! <3

Mathematics
1 answer:
zubka84 [21]4 years ago
3 0

The answer is given in the file attached

angle addition postulate:

m∠B = m∠1 + m∠3

m∠1 = m∠B - m∠3

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