Copy of Feuerbach's Theorem

Autor:cornel welster, 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.

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Forum 2 41161 A AutoCaption
Präsentation
parallelograms
Asymtotes of curve xy(x^2-y^2)+x^2+y^2=9
Rotations2_Clockwise

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