Feuerbach's Theorem

Auteur :V8frr

Feuerbach's theorem, which states that the nine-point circle is tangent to the three excircles of the triangle as well as its incircle. Drag A, B and C to see that this reamins invariable for any triangle.

Nouvelles ressources

Superellipse
Regular Polygons and Equivalent Triangles
bewijs stelling van Pythagoras
Area of a Circle Illustrated
Rectangle Construction Template (V2)

Découvrir des ressources

Graphing Quadratics Applet
Perpendicular lines
GeoGebra Courses for STEM
ล่องลอย
Inclined Plane Forces

Découvrir des Thèmes

Cosinus
Droites
Polygones
Homothétie
Fonctions en Escalier