The Nagel Point

Author:Steve Phelps

Construct the three excircles of a triangle. Construct the tangents at the sides. Lines drawn from the vertex to the tangent point on the opposite side are concurrent.

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bewijs stelling van Pythagoras
רישום חופשי

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Sphere with Great Circle
Líneas y puntos notables
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Pythagoras or Pythagorean Theorem
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