The Feuerbach Point

Author: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.

New Resources

Neuberg's Theorem
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Average Value of a Function
Billard V5.2 and V6
Visualizing the Pythagorean Identity with Sine and Cosine

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Troy Gamurot ~ 30-60-90 Triangle
Sissoko_B1_Reflection
Epitrochoid
P3.5
Angles in a Trapezium

Discover Topics

Circumcircle or Circumscribed Circle
Equations
Standard Deviation
Straight Lines
Functions