### 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.