# Triangle Geometry

There are many remarkable points, lines and circles in the simplest of all polygonal shapes - the triangle. You may investigate some of them by clicking on the button below.

The applet is made to display various elements of triangle geometry relative to a reference triangle or several of its derivatives, e.g, the anticomplementary or the medial triangles. Some elements play a double role and appear under different names in different triangles.

What if applet does not run? |

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