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levacccp [35]
3 years ago
5

Can someone please help with this one

Mathematics
1 answer:
bagirrra123 [75]3 years ago
7 0

Answer:

m∠8 = 123°

Step-by-step explanation:

<em>∠1 and ∠8 are alternate exterior angles</em>, and since lines A and B are parallel, then <em>they must be congruent</em>.

So, m∠1 = m∠8

Substitute: 123 = m∠8

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