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畢氏定理證明（Ｉ）
Author:
林辰燁
GeoGebra
New Resources
sanjiaohanshu
兩組對邊相等的四邊形
第八周作业
近似值：有效數字
兩組對邊相等和有直角的四邊形
Discover Resources
固定周界的長方形的面積變化
Square Root 平方根
教學資源P1~6
S3 Ch4.1 立體圖形(3D圖) - 十字形棱柱(ViewB)
GeoGebra数学资源（4-8年级）
Discover Topics
Orthocenter
Vectors 3D (Three-Dimensional)
Differential Equation
Binomial Distribution
Area