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橢圓軌跡
Author:
Ching-Hui Chou
GeoGebra
New Resources
幾何作圖題：切三圓（題目）
中華民國國旗 (Codex╱2026.10.06)
畫出對稱圖形
小数 的副本
算柱 (兩位數)
Discover Resources
Scheimpflug image
象形圖 (找出最多/最少)
塗色01
If指令的應用1
Orthographic Views 1
Discover Topics
Parallelogram
Set Theory
Quadratic Equations
Planes
Boxplot