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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
兩組對邊相等的四邊形
Nested spiral octagon
算柱 (兩位數)
美國國旗 (Codex 版)
長方體平面投影 (Codex版)
Discover Resources
eye tracing
公因數應用題2
Copy of 曲柄搖桿
正多邊形的對角線
宇宙模型
Discover Topics
Linear Functions
Curve Sketching
Optimization Problems
Geometric Mean
Scalene Triangles