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利用圓來畫橢圓
Author:
連琨銘
GeoGebra
New Resources
三半圓間的相切圓(Codex╱2026.10.07)
近似值：有效數字
直角坐標平面上的旋轉變換
Fibonacci Clock
伊朗國旗 (Codex╱2026.10.07)
Discover Resources
立體圖
三角函數
Percentage Change(百分變化)
Tetrahedron 四面體
工具：PlaneArrows, PlaneText... (v.2)
Discover Topics
Binomial Distribution
Arithmetic Operations
Ratios
Derivative
Hypergeometric Distribution