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垂線性質2
Author:
user9429
GeoGebra
New Resources
三位數除以一位數（一）
兩組對邊相等的四邊形
異分母分數減法
画直线等分三角形的面积
畫出對稱圖形
Discover Resources
waaachen
Primary School Geo
正方體的反射對稱
面積相關問題(Area)
日照图
方块堆叠(cube))
Discover Topics
Linear Programming or Linear Optimization
Ratios
Cuboid
Exponential Functions
Orthocenter