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In triangle ABC, AC = BC, angle DCB is 40 degrees, and CD is parallel to AB. What is the number of degrees in angle ACB?

 

 Dec 15, 2021
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angle(DCB) = angle(CBA) = 40o 

angle(CAB) = angle(CBA) = 40o

This makes angle(ACB) = 80o

 Dec 16, 2021

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