One circle c and two lines l_{1} and l_{2} are given. All circles which are tangent to the given circle and
to the given lines shall be constructed.

You can drag the center of the circle c or the lines l_{1} and l_{2}, and vary the radius (with pressed mouse button).
For each type of solution, you can decide, whether the solution circles are to be drawn.
The total number of solutions is indicated on the bottom right.