Feuerbach's Theorem

Author: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

z`]]
Assistants (custom GPTs or Gemini Gems) for Math
General Polar Equation of Conics with Rotation (1)
רישום חופשי
seo tool

Discover Resources

Dérivée
Theorem 3
Triangle Area
Gradient graph
Differentiability and Continuity

Discover Topics

Secant Line or Secant
Exponent
Trigonometry
Logarithm
LCM and GCD