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geomerty

https://matholympiad.org.bd/forum/viewtopic.php?f=19&t=3873

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Re: geomerty

Posted: Fri Sep 15, 2017 1:17 pm

by dwipneel

AB^2+CB^2= 〖CD〗^2+ 〖AD〗^2
HOW TO PROOF THAT ABCD IS A REACTENGLE

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