The Feuerbach Point

Autor:Steve Phelps

Construct the incircle and the three excircles of a triangle. The nine-point circle is tangent to all four circles. The point of tangency of the nine-point circle and the incircle is the Feuerbach Point.

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רישום חופשי
Volume by Shells Around y
Locus Related to Descartes' Folium
Volume by Disk/Washer around y
z`]]

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Pg114
Marecentrale1
Rainer Snow

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Prisma
Vectores 2D (dos dimensiones)
Geometría
Paralelogramo
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