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

רישום חופשי
fita tórica
bewijs stelling van Pythagoras
အခြေခံ data အခေါ်အဝေါ်များ
teste CJ

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Principia Prop. I.10 cor. 2
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Pythagoras or Pythagorean Theorem
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