Unizor - Geometry2D - Similarity - Circles
Channel: Zor Shekhtman on UNIZOR Education
Date: 23/05/2012

Theorem 1
Scaling of a circle results in a circle. The radii of these circles are ralated by a scaling factor.
Theorem 2
Any two circles are similar.
Theorem 3
For any two circles, positioned outside of each other, there is a transformation of scaling that transforms one into the other.