M2_8_8_6_7

8_6_7

Verify that the incenter is, in general, the only point in the interior of a triangle that is its own isogonal conjugate. Find all points in the exterior of the triangle that are isogonal conjugates of themselves.

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Slopes of Straight Lines
Vectors: Scalar Multiplication
Rotation in Cartesian Plane
Measuring Cup

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geogebraql1.2
Ex. 2 - AMomiroski
perp. bisect.
tretretretretre
Quiz on Finding Unknowns in Similar Rectangles 求相似長方形中的未知量：測驗

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Distribució Normal
Triangles Equilàters
Triangles Isòsceles
Construccions
Desigualtats