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Math Help - Adding isosceles right angled triangles to 2 edges of a triangle!

  1. #1
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    Question Adding isosceles right angled triangles to 2 edges of a triangle!

    Hi, I have been having some trouble with this problem, I am not quite sure if this is the right sub-forum, if not please direct me to where I should post it. I put it here as this the geometry forum for university mathematics, although I see it is for Differential Geometry which this is not.

    Let F be the midpoint of side BC of a triangle ABC. Construct isosceles right angled triangles ABD and ACE externally on sides AB and AC with the right angles at D and E. Show that triangle DEF is an isosceles right angled triangle.
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  2. #2
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    Re: Adding isosceles right angled triangles to 2 edges of a triangle!

    It is apparent that this is the wrong forum for this problem, could anybody reccomend where it belongs?
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