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Author:
dhc987
GeoGebra
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第八周作业
球体的体积推导
祖冲之的期望：内棋与外棋
画直线等分三角形的面积
三位數除以一位數（二）
Discover Resources
Locus: Fixed Distance From Line Segment
Copy of 3S2 01a 平行四邊形 20151207
test
Properties of a Rectangle
巧算周界
Discover Topics
Poisson Distribution
Cosine
Arithmetic Mean
Trapezoid
Indefinite Integral