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動圓的圓心軌跡為橢圓
Author:
Ho-Kai Chen
Topic:
Ellipse
拉動大圓上的N點, 觀察圖形的變化!
GeoGebra
New Resources
找出對稱軸
三位數除以一位數（一）
直角坐標平面上的旋轉變換
兩位數除以一位數（二）
画直线等分三角形的面积
Discover Resources
congruent triangles
y=-3x+6(x>=3)
函数作图工具的副本
交錯級數(Roger B. Nelsen)
楼梯
Discover Topics
Exponent
Curve Sketching
Quadratic Equations
Dilation
Bar Chart or Bar Graph