A similar triangle
The applet illustrates the invarianceof the original shape (similar triangle EDF) formed by three Cevians, one from
each vertex with a same angle α ≤ 
BAC, ABC, BCA) with thecorresponding side. The ruler changes α between 0º and BAC.
BAC, ABC, BCA) with thecorresponding side. The ruler changes α between 0º and BAC.