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密鋪5
Author:
chen mingchuan
GeoGebra
New Resources
画直线等分三角形的面积
球體建築師
兩位數除以一位數（一）
兩組對邊相等的四邊形
三位數除以一位數（二）
Discover Resources
技巧集
Quiz on Solving One-step Linear Equations (1) | 解「一步」一次方程：測驗(1)
My second work
時間
四邊形外接正方形
Discover Topics
Standard Deviation
Equations
Line Segment
Integers
Translation