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Tangent of a Circle 圓的切線
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
三半圓間的相切圓(Codex╱2026.10.07)
AI 訓練教室
國旗 (作圖步驟直接餵給 Claude)
找出對稱軸
幾何作圖題：切三圓（題目）
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外公切線作圖
重心
橢圓的副本
limit of function f(x)=x^2
「相似三角形」任务4的副本
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Derivative
Integers
Random Variables
Dilation
Straight Lines