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转盘
Author:
许业成
GeoGebra
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三位數除以一位數（一）
画直线等分三角形的面积
判斷球體
找出對稱軸
【案例】2018年全国1卷理科12题
Discover Resources
指數的對稱性
三角形四心
相似形_Tasks_Collection
Fermat's Spiral
Hyperbolic
Discover Topics
Fractal Geometry
Division
Integral Calculus
Linear Programming or Linear Optimization
Calculus