Problems on Circles IX: Circumcircles and Incircles of a Triangle
Initializing live version

Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
This Demonstration shows a concise implementation of the incircle (the circle tangent to the three sides) and the circumcircle (the circle passing through the three vertices) of a triangle.
Contributed by: Jaime Rangel-Mondragon (March 2011)
Open content licensed under CC BY-NC-SA