Their topics include the circle's special role in geometry, famous theorems about circles, circle constructions: the

problem of Apollonius, Mascheroni constructions: using only compasses, rolling circles: hypocycloids and epicycloids, and spherical geometry: circles on the sphere.

It re-produces the work of Bulgarian math wonderkid Radko Kotev, who recently solved the ancient geometrical

problem of Apollonius in a way no other mathematician has ever done.

Kotev deserved his place in the spotlight by solving the ancient geometrical problem of Apollonius in a way no other mathematician has ever done.

The problem of Apollonius is to construct circles that are tangent to three given circles in a plane.

Radko Kolev, a 19 year old Bulgarian highschool student, has solved the 2000 year old geometric

problem of Apollonius in a new and unique way.