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Author:
Ricky Chan
GeoGebra
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GeoGebra笔记功能体验课件
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
球體建築師
四邉形 (四年級) 教師版
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為甚麼二次函數中，a是正數，開口向上?
平行四邊形面積
鏡面反射光線
F.3 Q5 BQ
(004)80102史巧薇
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Ellipse
Logic
Numbers
Continuity
Real Numbers