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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
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圓的基本性質
垂直線的斜率
常见四边形是否是双心四边形
祖冲之的期望：内棋与外棋
百分數及其應用
Discover Resources
圓與切線
FHMS Corr Angles (1 Pair)
拋物線軌跡(1)
周界平移
[洋葱] 给定面积找点(0057)
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Similar Triangles
Limits
Rectangle
Function Graph
Definite Integral