Copy of Feuerbach's Theorem

Author: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.

New Resources

Rose Curve
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Cartesian vs Polar
Angle Addition: Warm Up Exercises
Slope Between 2 Points (Phase 2)

Discover Resources

Horizontal and Vertical Shifts
Forum_32254_showDepended
equipment to check the laws of dynamics
medians of a triangle
U-Substitution (Definite Integrals)
Schueller Parallelogram

Discover Topics

Solids or 3D Shapes
Cosine
Exponential Functions
Dilation
Complex Numbers