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Angle Sum Theorem
Author:
Katherine Godinez
Drag the vertices (A,B, and C) to change their angle measures. To rotate the triangle, use the sliders.
GeoGebra
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Poorly Drawn Parallelograms
Parallelograms: Quick Investigation
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Icosahedron1
Explore the invariant lines of matrix {{-2,5},{6,-9}}
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10.2.1b #941967 option C2
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NoahDixon_MeasuringObjects
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