Javascript Version An Isosceles Triangle Theorem
In the figure, ABD is an isosceles triangle with AB = BD. Also AE = CD.
F is the intersection of AD and EC.
The theorem states that EF = FC.
We also see the ratio of AF / FD. Can you come up with a formula for
this ratio in terms of AB, AD and AE?
If you are interested in this applet, you may like our Interactive Symbolic Geometry software Geometry Expressions.
