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垂直線的斜率
Author:
Anthony OR 柯志明
Topic:
Difference and Slope
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
四邊形的特性
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
Discover Resources
不是平行四邊形的四邊形
花瓣紋章
禪繞畫
橢圓1--四圓心近似法
Inclined plane (Angle between two planes)
Discover Topics
Square
Linear Programming or Linear Optimization
Variance
Planes
Optimization Problems