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布丰投针实验
Author:
朱亮
GeoGebra
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兩組對邊相等的四邊形
画直线等分三角形的面积
異分母分數減法
直角坐標平面上的旋轉變換
兩位數加法
Discover Resources
中空柱體
因式分解二次方程
四邊形特性
Angle (Extended 1)
congruent (ASA)
Discover Topics
Random Variables
Combinatorics
Arithmetic Operations
Optimization Problems
Algebra