Anna-Maria Lanzinger's answer to Mohammed's Egypt question.

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Anna-Maria Lanzinger
Anna-maria Lanzinger's answer
4 answers (Tutor Details)
1st
It is pretty easy to solve if we would know, that the angle bfc (and cfe) would be 90. Are you sure this wasn't part of the question? Because it seems a little bit too tough for pupils if it wasn't.