Dynamic Geometry
The interactive figure above, created with GeoGebra,
shows a triangle ABC with the Lemoine Line C1A1B1.
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Lemoine Line
Tangents to the circumcircle of triangle ABC, at points A, B, and C, meet sides BC, AC, and BA at points
C1A1, and B1, respectively. Prove that points
C1A1B1 are collinear.
GeoGebra
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