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正五邊形摺紙證明
Author:
李政憲
GeoGebra
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apec
montecarlo circles 5
Neuberg's Theorem
兩位數的位值
GGB is Awesome!
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Start, Copy Segment
Real Time Clock
stadium
Modeling Fractions with Visual Models
Experiments with Transformations in the Plane
Discover Topics
Interest Calculation
Solids or 3D Shapes
Binomial Distribution
Conditional Probability
Circle