Theorem of Touching Circles
Tangent Circles
Grade 10 Math
Geometry
The proof of the Theorem of Touching Circles is explained in this video. A two column proof is used in proving the theorem. Externally touching circles and internally touching circle are also illustrated in the video. Touching circles may also be called kissing circles or tangent circles.
Math Video Central
This website provides tutorial videos on Algebra, Geometry, Trigonometry, Pre-Calculus, Basic Calculus, and Statistics and Probability. The videos are for junior and senior high school students as well as for parents who would like to guide their kids in understanding their lessons in math.