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旋轉正方形
Author:
33陳郁婷
GeoGebra
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長方體平面投影 (Codex版)
兩組對邊相等的四邊形
拼砌四邊形
近似值：有效數字
直角坐標平面上的旋轉變換
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線對稱圖形練習2
P4 分數基礎
二元一次不等式
Form 6(中六級)
三角形三边关系
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Ellipse
Linear Functions
Equations
Conic Sections
Combinatorics