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proof51 柯承志
Author:
郭亮偉
GeoGebra
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兩位數加法
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
柱體建築師
拼砌四邊形
Discover Resources
Conic section-ellipse&hyperbola
江苏省职校数学网络资源
对数的运算性质
垂心
数线段
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Congruence
Subtraction
Ratios
Stochastic Process or Random Process
Rhombus