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切割正二十面體(直)
Author:
薛鈞聰
GeoGebra
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算柱 (兩位數)
兩位數除以一位數（一）
找出對稱軸
【案例】2018年全国1卷理科12题
直角坐標平面上的旋轉變換
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對稱方波
方向餘弦
分數除法
Compare areas by cutting shapes Q1
Quiz on Signs of Coefficients of Quadratic Functions 二次函數係數的正負號：測驗
Discover Topics
Right Triangles
Normal Distribution
Variance
Volume
Combinatorics