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Rectangle
Author:
HamiltonCityABLE
A rectangle is another kind of special parallelogram and quadrilateral. Opposite sides are parallel. Opposite sides are equal in length. **All internal angles are 90 degrees.**
GeoGebra
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"Angry Birds" Game 3
HKDSE 2014 Paper1 Q17
MAT.ALG.142.1, 1047718, F1
Length vs. Number of Objects - Sim to Sim - Add Subt 8
Square Drag Test
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Angles
Linear Programming or Linear Optimization
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Natural Numbers