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定长线段在相交直线上滑动
Author:
冯伟冀
GeoGebra
New Resources
異分母分數減法
算柱 (兩位數)
找出對稱軸
兩位數加法
畫出對稱圖形
Discover Resources
linear function
平行四邊形面積教材三
梯形的面積
坐標網格的複數映射（次方）
学习计算器套件
Discover Topics
Differential Calculus
Mode
Conditional Probability
Continuity
Integers