Two center traces

The problem

Take the arbitrary segment CB of the length a,
and on it as diameter draw the circle.
On this circle, take the arbitrary point A.
For the triangle ABC, find the points, D and E, of intersection
of the medians and of the angular bisectors respectively.
While the point A moves along the circle,
the   points D and E move along  the some closed curves.
Find these traces, as function of a.

The hint

See the picture

The answer

See here but better try yourself!

The solution

N/A


Converted by Mathematica      January 14, 2002