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比和比值
Author:
李春培
比和比值
GeoGebra
New Resources
錐體建築師
判斷球體
拼砌四邊形
球體建築師
兩位數除以一位數（二）
Discover Resources
等值分數圓餅圖
Weighted Mean 加權平均數
explore
Ladder on Wall
动圆与两圆外切与内切(2)
Discover Topics
Scalene Triangles
Sphere
Curve Sketching
Hyperbola
Complex Numbers