Ejercicio EVAU Madrid 2008 Modelo A3 (Tangencia Apolonio Potencia)

A3.- Find the circle with the smallest possible radius that is tangent to circles c/1 and c/2 of equal radius, and to line t, the latter being parallel to the line joining the centers of both circles. (Technical Drawing, University Entrance Exam, High School, Tangency, Apollonius, Power)