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ABCD is a quadrilateral such that AB is parallel to CD. We know that angle A is equal to Angle B, which is 60, and that AD=CB=1 . If AB=10 , what is DC?
 

 Sep 21, 2021
 #1
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DC = 6.

 Sep 21, 2021
 #2
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Sorry, that's incorrect

Guest Sep 22, 2021
 #3
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9. AB-1=9

 Sep 25, 2021

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