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小正多边形在大正多边形内的滚动（边长相等）
Author:
孟宝兴
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
小数 的副本
畫出對稱圖形
算柱 (兩位數)
Discover Resources
一元一次不等式圖形
Distributive Law 2 (分配率 2)
Copy of 閱讀鐘面及數字鐘（時和分）
P4 4N6 分數的種類及轉換 / Fraction Types and Their Conversions
翰林數學_1下_CH2-1_直角坐標平面的認識象限
Discover Topics
Mode
Secant Line or Secant
Inequalities
Definite Integral
Standard Deviation