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Hi

i will be Thankful if Anybody can help me in this question:

4 circle are Tangent in A, B, C and D point.

ABCD is Cyclic quadrilateral?

 

thank you

 

 Mar 31, 2019
 #1
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A convex quadrilateral ABCD is cyclic if and only if its opposite angles are supplementary.

 

Seeing as how A and C are both acute angles it's not possible that they are supplementary.

 

Thus ABCD is not a cyclic quadrilateral.

 Mar 31, 2019
 #2
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thank you, but i don't have any idea how to solve it

oskouie  Apr 1, 2019

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