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正弦定理2
Author:
杨欣霞
GeoGebra
New Resources
第八周作业
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
畫出對稱圖形
柱體建築師
Discover Resources
橢圓之極偶 / polarity for ellipse
GGB9
圓錐截痕模型
Copy of 分數與小數
直线边界磁场
Discover Topics
Pie Chart or Circle Chart
Median Value
Statistical Characteristics
Quadrilaterals
Vectors 3D (Three-Dimensional)