Copyright Saltire Software Inc.
gx banner

Javascript Version

Incircle

 

 

 

 

 

 

 

 

 

 

 

 

 

The circle is defined to be tangent to the lines AB, BC and AC.

What do you observe about the angles ABD and DBC as you move the triangle's vertices around?

If you are interested in this applet, you may like our Interactive Symbolic Geometry software Geometry Expressions.