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Let ABCD be a cyclic quadrilateral. Let P be the intersection of \(\overleftrightarrow{AD}\) and \(\overleftrightarrow{BC}\), and let Q be the intersection of \(\overleftrightarrow{AB}\) and \(\overleftrightarrow{CD}\). Prove that the angle bisectors of angle DPC and angle AQD are perpendicular.

 

Thanks so much!

 


 

 Apr 20, 2018
 #1
avatar+101322 
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See this very nice answer that was  provided by Melody a while back....

 

https://web2.0calc.com/questions/circles-and-angles

 

 

cool cool cool 

 Apr 20, 2018

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