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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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四邉形 (四年級) 教師版
第八周作业
GeoGebra笔记功能体验课件
兩位數加法
判斷球體
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四邊形
畢式定理 (01)
Sequence指令練習(逐一套疊正方形)
六芒星
测试
Discover Topics
Optimization Problems
Quadratic Functions
Angles
Planes
Set Theory