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Artemon [7]
3 years ago
12

Please help What is the value of d?

Mathematics
1 answer:
PtichkaEL [24]3 years ago
8 0
Rule: with any inscribed quadrilateral, the opposite angles are supplementary (they add to 180 degrees)

Based on that rule, we can say
d+100 = 180
d+100-100 = 180-100
d = 80

Answer: 80
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