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2017-09-02－五複合四面體
Author:
黃俊翔
GeoGebra
New Resources
画直线等分三角形的面积
球体的体积推导
錐體建築師
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
test
六年級_截面_柱體_多邊形
面積3
corresponding angles
特殊角三角函数值
Discover Topics
Scalene Triangles
Right Triangles
Indefinite Integral
Difference and Slope
Dilation