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九點圓
Author:
李詠甯
九點圓
GeoGebra
New Resources
錐體建築師
兩組對邊相等和有直角的四邊形
第八周作业
三位數除以一位數（二）
球體建築師
Discover Resources
賺賠：例1
正多面體
分段函數
area 面積2
翰林數學_2下_CH4-1_平行線的特性與定義
Discover Topics
Ellipse
Intersection
Volume
Step Functions
Similar Triangles