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第12届美国中学生数学邀请赛题
Author:
王俊辉
GeoGebra
New Resources
直角坐標平面上的旋轉變換
兩位數加法
兩位數除以一位數（二）
近似值：有效數字
sanjiaohanshu
Discover Resources
判斷柱體 8
Compare areas by cutting shapes Q1
拋物線1--焦點法
模拟龟兔画板
正餘弦函數的疊合
Discover Topics
Continuity
Polygons
Random Experiments
Distributions
Vectors 2D (Two-Dimensional)