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Math
Author:
fung yiu cho
GeoGebra
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近似值：有效數字
兩組對邊相等的四邊形
第八周作业
四邊形的特性
畫出對稱圖形
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三角柱算體積(可以切開)
時針與分針的夾角
有趣的梯形面積問題
畢氏定理的副本
贪吃蛇（第一版）
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Square
Reflection
Curve Sketching
Mode
Fractions