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定长线段在相交直线上滑动
Author:
冯伟冀
GeoGebra
New Resources
平行線的斜率
垂直線的斜率
百分數及其應用
三角函数 的副本
比較五件物件的重量
Discover Resources
Addition and Subtraction of Polynomials 1(多項式的加減法 1)
MFS: Rebound 4
橢圓重心軌跡1
Gazing Cow Problem (a)
根據百分率找數量（一）:例1的副本
Discover Topics
Addition
Dilation
Multiplication
Parametric Curves
Arithmetic