Feuerbach's Theorem

Autor: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.

Nuevos recursos

Polar Coordinates Book
Special Right Triangles 30°-60°-90° and 45°-45°-90°
Astroid
Sine in Cartesian and Polar Coordinates
Tracing r = 2 cos(θ)

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