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Author:
余銘芬
GeoGebra
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長方體平面投影 (Codex版)
找出對稱軸
判斷球體
畫出對稱圖形
拼砌四邊形
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林書豪加油
reflectional symmetry_1
ptccs2new4
橢圓軌跡
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General Quadrilateral
Trigonometry
Prism
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