The Feuerbach Point

Autore: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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apec
רישום חופשי
Rolling Circles and Polygons
Superellipse
bewijs stelling van Pythagoras

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Visualisatie bij opgave 3.70 R&B
June 2015 Regents #20
Points Equidistant From Two Circles
set-venn-euler

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Angoli
Ortocentro
Equazioni di 2° grado
Termini
Numeri naturali