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相同圖形的拼砌（有兩組平行線的四邊形）
Author:
ho ting chit
GeoGebra
New Resources
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
異分母分數減法
球體建築師
【案例】圆柱体内放置一个大球六个小球
Discover Resources
Mobius strip
move
函數圖像的變換2(由2點至5點定義y=f(x))
Angle between Lateral Faces 1
垂直線的斜率
Discover Topics
Rational Numbers
Square
Algebra
Kite
Tangent Line or Tangent