谷歌课堂

GeoGebra 教室

Coxeter- FIgure 7.2A

作者:willgiesbarton

主题:几何

Lines

are the sides of the triangle

and

is a point not on any of them. Then

is a line not though any of

. The point

and line

determine 6 points on the sides of the triangle:

.

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