Inscribe a Circle in a Triangle
How to Inscribe a Circle in a Triangle
using just a compass and a straightedge
Inscribe: To draw on the inside of, just touching but never crossing the sides (in this case the sides of the triangle).
images/construct.js?mode=triangleinscribe
Steps:
- Bisect one of the angles
 - Bisect another angle
 - Where they cross is the center of the inscribed circle, called the incenter
 - Construct a perpendicular from the center point to one side of the triangle
 - Place compass on the center point, adjust its length to where the perpendicular crosses the triangle, and draw your inscribed circle!