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A square DEFG  varies inside equilateral triangle ABC, so that E always lies on side AB, F always lies on side BC, and G  always lies on side AC.  The point D  starts on side AB and ends on side AC. 

 

Show that as square DEFG varies, the height of point D  above BC  remains constant.

jttttt  Oct 28, 2018
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This question has been asked before!!!

 

https://web2.0calc.com/questions/a-square-defg-varies-inside-equilateral-triangle

 

cool

KnockOut  Oct 28, 2018

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