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quiz 9.1 2(a)
Author:
lamanleung
GeoGebra
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球體建築師
画直线等分三角形的面积
三位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
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和差角公式几何证明
三角形探究1
共頂點、底共線
拋物線5--包絡線法
一位数加减法运算自我测评
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Derivative
Random Variables
Rational Numbers
Fractal Geometry
Linear Functions