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Universal Hyperbolic Geometry - Perpendicularity - 2D and 3D views
Author:
Lionel GERVAIS
Topic:
Geometry
For explanation, you can watch the following YouTube videos :
Apollonius and polarity | Universal Hyperbolic Geometry 1 | NJ Wildberger
Duality and perpendicularity | Universal Hyperbolic Geometry 9 | NJ Wildberger
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