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Penrose

Author:GeoGebra Team, Mathieu Blossier

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apec
Two Triangle Theorem
Portions of a Sphere
Identify Opposite, Adjacent, Hypotenuse
How to Draw a Cube in 2D

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Shot 2: Quad
TEAC 880E
Exploring Properties of Parallel Lines
Separable Clock
discriminant hook

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Geometry
Triangles
Volume
Angles
Orthocenter

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