1 answer:
Answer:
B
Step-by-step explanation:
quadrilaterals= 360 degrees, now if you sub 80 for x, 80 +100 is 180 x 2( counting the other side) so 180 x 2 is 360
*I know there is a better way to explain it, but this is a way i find it
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Answer:
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Step-by-step explanation:
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