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sdas [7]
3 years ago
7

Which Theorem do you use to solve for D?

Mathematics
2 answers:
mixas84 [53]3 years ago
5 0

Answer:

D + 50 - 20 = 70

D = 70

Step-by-step explanation:

kirill115 [55]3 years ago
4 0
Angle sum property
d + d +50 + d - 20 = 180
3d = 180 - 50 +20
3d = 150
d = 150/3
d = 50
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