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保持比例
Author:
hjyanghj
Topic:
Geometry
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（一）
四邊形的特性
畫出對稱圖形
球体的体积推导
Discover Resources
clock
線段與角度的裝飾
Locus: Equidistance From Two Points
足迹
分数应用题数量关系线段图示
Discover Topics
Definite Integral
Arithmetic Mean
Mathematics
Difference and Slope
Limits