April 25th, 2019, 12:02 PM  #1 
Newbie Joined: Apr 2019 From: New York Posts: 2 Thanks: 0  Circle Proof Help
In the diagram below, quadrilateral ABCD is inscribed in circle O. AB is parallel to DC, and diagonals AC and BD are drawn. Prove that triangle ACD is congruent to BDC. I have listed the givens and stated that DC is congruent to DC because of the reflexive property, but I’m stuck after this. 
April 25th, 2019, 01:22 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,823 Thanks: 723 
Where's the diagram?

April 25th, 2019, 01:50 PM  #3 
Newbie Joined: Apr 2019 From: New York Posts: 2 Thanks: 0 
Sorry I forgot to attach it!


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