two circles part1Ā@Ā@
Ā@There are two circles.The black circle is inside of the blue circle.The black circle is rolling on the blue circle.
is on the black circle.
Move point P to find the geometric quality of point Q.
Ā@You can also change the numbers (TO,TO',QO',TO',n) on CABRI
Download CABRIáU data (d56) from here.