The Feuerbach Point

Autor:Steve Phelps

Construct the incircle and the three excircles of a triangle. The nine-point circle is tangent to all four circles. The point of tangency of the nine-point circle and the incircle is the Feuerbach Point.

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Rolling Circles and Polygons
Building Figures with Set Areas
Fourier Lissajous (Mechanical)

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MODUL 20-D1_TRESNA SETIA NURYANA_SMPN 11 PESAWARAN
Point reflection as a series of reflections

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