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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
近似值：有效數字
sanjiaohanshu
Fibonacci Clock
國旗 (作圖步驟直接餵給 Claude)
世界平面地圖 (Codex╱2026.10.07)
Discover Resources
多邊形的外角和
乘法
指數與對數
整數點
平方求和V 庄皮春 (Pi-Chun Chuang)
Discover Topics
Complex Numbers
Numbers
Optimization Problems
Fractions
Inequalities