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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
球體建築師
兩位數加法
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
三位數除以一位數（二）
Discover Resources
根據百分率找數量（一）: 例2
saaddfasdf
Lagrange
圖形C
伸縮變換的副本
Discover Topics
Surface
Similarity Transformation or Similarity
Right Triangles
Terms
Quadratic Equations