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內外角平分線的副本
Author:
Niehanyu
,
羅驥韡 (Pegasus Roe)
角平分點（圖中 C 點）會形成一個圓
GeoGebra
New Resources
幾何作圖題：切三圓（題目）
畫出對稱圖形
Nested spiral octagon
世界平面地圖 (Codex╱2026.10.07)
三半圓間的相切圓(Codex╱2026.10.07)
Discover Resources
waaachen
Circle Properties
同學最喜愛的運動
圓外切及內切
PROBLEM SOLVING(COLOUR)
Discover Topics
Arithmetic Operations
Linear Functions
Confidence Interval
Multiplication
Cuboid