The Feuerbach Point

Autore: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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立体几何-公理3及推论
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גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
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