Feuerbach's Theorem

Autore: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.

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What Do You See? (2)
Congruent Figures
Pythagorean Template: Integer Legs
Function Art 3D - Flower
Parabolas, Lines and Nomograms

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sample
cosine rule
Absolute Value Transformations
Combinazione lineare di vettori
Proof with out words

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Quadrilateri
Vettori 3D (tridimensionali)
Parabola
Distribuzioni
Vettori