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HKDSE 2016 by Mr LO WY
Author:
tcchan
GeoGebra
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兩組對邊相等和有直角的四邊形
【案例】2013年安徽高考15题
三位數除以一位數（一）
錐體建築師
兩位數加法
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圖一
http://www.qsir.org/?p=8853
Ex5D#3
探究余弦定理
双曲线的定义.许兴华数学
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Equations
Linear Regression
Rational Numbers
Planes
Vectors 2D (Two-Dimensional)