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Author:
yhf
GeoGebra
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兩組對邊相等和有直角的四邊形
找出對稱軸
柱體建築師
拼砌四邊形
四邉形 (四年級) 教師版
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生活
希瓦定理
CIRCLE
數學電腦繪圖與解題
三角函數值 (特別角)
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Logarithm
Set Theory
Hypergeometric Distribution
Congruence
Cone