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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Function art 3D - waiting shed
Isosceles Right Triangle
Absolute Value Functions f(x)=a |x - h| + k
Odd Function Explorer
繪畫垂直線

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Πόρισμα
Outside the Circle
Exercise 1
Trigonometry Basic Unit Circle
Trigonometry in the hand (trigonometrie in the fingers)

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Funktionen
Normalverteilung
Ebene Figuren
Wahrscheinlichkeit oder Wahrscheinlichkeitsrechnung
Baumdiagramme