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優良作品2(怡雯)
Author:
Ching-Hui Chou
GeoGebra
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近似值：有效數字
兩位數除以一位數（二）
算柱 (兩位數)
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
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中點軌跡(動點在兩圓上)
最短距離
perimeter
正方体展开图的副本
抛物线的参数方程的副本
Discover Topics
Angles
Optimization Problems
Area
Quadratic Equations
Congruence