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GeoGebra
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Triangle fixed height
Author:
iedc
GeoGebra
New Resources
sanjiaohanshu
近似值：有效數字
兩位數加法
拼砌四邊形
四邊形的特性
Discover Resources
大字體
圓_Collection
区域积分例子
橢圓的定義（by Jutor）
circle
Discover Topics
Coordinates
Interest Calculation
Boxplot
Normal Distribution
Solids or 3D Shapes