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OpenStudy (anonymous):
What is the value of d?
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OpenStudy (anonymous):
OpenStudy (anonymous):
A) 84 B) 50 C) 80 D) 100
Directrix (directrix):
Theorem: If a quadrilateral is inscribed in a circle, then the opposite angles of the quadrilateral are supplementary.
OpenStudy (anonymous):
@Directrix So is it 100 ?
Directrix (directrix):
No because 100 + 100 = 200. Supplementary angles sum to 180. Try again.
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Directrix (directrix):
What do you add to 100 to get 180?
OpenStudy (anonymous):
Oh so it's 80?? because 80 + 100 = 180 ?
Directrix (directrix):
Correct.
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