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GeoGebra
Parabola with Focus and Directrix
Author:
Tim Brister
Discover Resources
Theorem 83
Определение эллипса
Parallel and Perpendicular Lines
rotation
Sine Function Graphs
New Resources
Post shadow, Sun behind
رسم الخط المستقيم
Shadows in Perspective
Fermat Point of a Triangle
Perp Bis Problem
