Demo
Download the executable package of GeoDraw and click File->Open Example to import the following demo examples (saved as ".exmp" files). Dynamic diagrams can be automatically generated by clicking the Execute button
Feuerbach's theorem
The nine-point circle of a triangle is tangent to the incircle and to the three excircles.
Napoleon theorem
If equilateral triangles are erected externally on the sides of any triangle, their centers form an equilateral triangle.
Steiner's theorem
If equilateral triangles ABC', ACB', and BCA' are erected externally on the sides of a given triangle ABC, then the three lines AA', BB', and CC' are concurrent.