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GeoGebra
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Author:
Ronan Downes
,
Anthony OR 柯志明
GeoGebra
Acknowledgement: Adapted from
John Ulbright's
"
Interactive Number Grid
".
New Resources
Blancmange curve (fractal)
Droste effect
Flip Flop
探究由平行線和截線所成的角
Variation Theory Parallelogram Proofs
Discover Resources
Circle: Inscribed and Central Angles
Trigonometric Ratio of Any Angle
Noyce
Circle Theorem 7
quiz
Discover Topics
Percentages
Diagrams
Translation
Rotation
Pyramid