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正方形的旋轉
Author:
李春培
GeoGebra
New Resources
異分母分數減法
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
兩位數加法
第八周作业
Discover Resources
拋射問題
Quartiles and Box Plot (one data set) 四分位數與框線圖（一組數據）
Proof2 周子翔
比較利益
整數點
Discover Topics
Isosceles Triangles
Frequency Distribution
Curve Sketching
Median Line
Confidence Interval