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Math Help - [SOLVED] Rectangle Prove Problem

  1. #1
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    Question [SOLVED] Rectangle Prove Problem

    Please help me with this problem. Thank you.
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  2. #2
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    Hello.

    triangle EOD is rectangular => the median from O : OG = ED/2 = EO => EOG is equilateral and the ungle DEO is 60 degrees => ungle AEO is 120 degrees, and being isoscel => the ungle EAO = 30 degrees.

    In triangle GOD we have : ungle GOD is 30 degrees, being isoscel => ungle GDO is 30 degrees too => ungle GDO = ungle EAO => triangle ADO is isoscel and AO=OD => the diagonals AC = BD .

    In a paralellogram, if the diagonals are equal => rectangle. So it is.

    I hope u understood the explanation,as i didnt find any better method to write...
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  3. #3
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    Thank you, thank you. I got it.
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