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內公切線長
Author:
luke huang
GeoGebra
New Resources
三半圓間的相切圓(Codex╱2026.10.07)
Earth with coastline
中華民國國旗 (Codex╱2026.10.06)
幾何作圖題：切三圓（題目）
湖南省张毅郴数字教研工作室 logo
Discover Resources
waaachen
F1Geometry
手拉手模型
同角三角函数的基本关系（正六边形记忆法）
y=asin(bx+theta)+c
Discover Topics
Conic Sections
Equilateral Triangles
Tangent Line or Tangent
Calculus
Continuity