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katrin2010 [14]
3 years ago
12

Please help me on these questions

Mathematics
1 answer:
Virty [35]3 years ago
5 0
Because it is a quadrilateral, all 4 angles have to add up to 360 degrees.

Add the 3 known angle measures.

80+95+38=213

Then subtract from 360.

360-213=147

X=147 degrees
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