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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
兩位數除以一位數（一）
第八周作业
兩組對邊相等和有直角的四邊形
找出對稱軸
三位數除以一位數（一）
Discover Resources
堆垛六顆鬼東西
圖G
Rolling Circle
linkage
椭圆抛物面
Discover Topics
Polynomial Functions
Equilateral Triangles
Set Theory
Arithmetic
Straight Lines