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o-na [289]
3 years ago
9

APEX

Mathematics
1 answer:
Len [333]3 years ago
5 0

Answer:

B. 30

Step-by-step explanation:

A line is 180 degrees, so when we have 100, we subtract that from 180 to get the interior angle of 80.

A triangle has a sum of 180, so we just subtract 80 and 70 from 180 to get 30.

Hope this helps

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