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垂直線的斜率_hui sir
Author:
Hui Sir
GeoGebra
New Resources
算柱 (兩位數)
柱體建築師
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
画直线等分三角形的面积
Discover Resources
Visualizing a System of Linear Equations
GGB-BOOK
Slope of a St. Line (formula)
abc731797
正圆锥展开图
Discover Topics
Histogram
Pie Chart or Circle Chart
Kite
Derivative
Hypergeometric Distribution