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探索黎曼和
Author:
代国兴
GeoGebra
𝜋
Check my answer
New Resources
錐體建築師
兩組對邊相等和有直角的四邊形
異分母分數減法
兩組對邊相等的四邊形
三位數除以一位數（二）
Discover Resources
translation
任務2的副本
變化圖形製作
Uses of Trigonometry
作垂线或平行线
Discover Topics
Arithmetic Mean
Solids or 3D Shapes
Ratios
Symmetry
Scatter Plot