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Let ABCD be a cyclic quadrilateral. Let P be the intersection of AD and BC, and let Q be the intersection of AB and CD. Prove that the angle bisectors of angle DPC and angle AQD are perpendicular.
Can you guys please help me with this and give me some pointers?
to see image: http://latex.artofproblemsolving.com/9/b/b/9bbc27fba790f37537655605929bafb899150e5d.png
Last edited by ncyaclauds (2016-07-03 03:05:44)
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see
http://mathisfunforum.com/viewtopic.php?id=23185
{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}
(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha
{Gods rejoice at those places where ladies are respected.}
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Wait I am confused, what do I label P, and what do I label S
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P ia already there.the bisector of P (unnamed in the figure) intersects DQ at R. and PR intersects the bisector of Q at S.
{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}
(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha
{Gods rejoice at those places where ladies are respected.}
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Wait but is that it? What do I do after it. I am confused. Is there anyway you could explain it more thoroughly?
Last edited by ncyaclauds (2016-07-07 01:47:26)
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