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角的概念
Author:
周胜华
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
四邊形的特性
畫出對稱圖形
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The relation between Circular Motion &Simple Harmonic Motion
雙曲線規
PMC 2014-15 ans
经纬度
折扣 例6的副本
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Logarithmic Functions
Straight Lines
Trapezoid
Kite
Secant Line or Secant