Prove All Circles are Similar
Videos and lessons to help High School students learn
how to prove that all circles are similar.
Common Core: HSG-C.A.1
Similarity of Circles
How to prove all circles are similar.
Geometry2D - Similarity - Circles
Theorem 1 Scaling of a circle results in a circle. The radii of
these circles are related 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
Proving Circles Similar.
Compare radius, circumference and area.