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Topic: Re: Euclidean problem
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Pradnesh

Posts: 1
From: Mumbai
Registered: 8/20/17
Re: Euclidean problem
Posted: Aug 20, 2017 7:11 AM
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> Hi,
>
> I've some troubles trying to prove this problem:
>
> Given a square (ABCD) , E is an internal point to the
> square such that the angle ECD = angle EDC = 15°;
> prove that ABE is an equilateral triangle.
>
> I've just managed to prove that ABE is isosceles, but
> can't move forward. Hope someone can help me figure
> out the right path!


Hi,GabMat,
I have a solution to your problem. Hope you are aware of the basic Trigonometry principles and the sine rule which states that-
In ?ABC a/sinA=b/sin B=c/sin C.
You can find my solution in the attachments because it is difficult to type it.
Let me know about it.



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