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7.4-1 平面向量的内积
Author:
GeoGebra Institute of WuXi
GeoGebra
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画直线等分三角形的面积
算柱 (兩位數)
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
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圓定理2.1
三個外切圓
P63-2
滑桿2-3
平方差公式的几何意义
Discover Topics
Symmetry
Cosine
Rational Numbers
Multiplication
Division