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a.3.s.heffernan
Author:
Samantha Heffernan
GeoGebra
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探究長方形對角線上的正方形數目
Flip A Bunch of Coins
derivatives of power
Flip 5 Coins.
bewijs stelling van Pythagoras
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Angle Subtended at the centre
foro
true/Ceva5.ggb
Jewellers problem proof of maximum at 30 degrees.
Geometry Folding
Biljardia Ellipsillä
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Angles
Algebra
Geometric Transformations
Cube
Centroid or Barycenter