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扇形面積
Author:
李春培
扇形面積
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數加法
GeoGebra笔记功能体验课件
錐體建築師
第八周作业
Discover Resources
Ex5C#2
qr code for symmetry
雙曲線3-等軸法
螺旋正方形
连续开方(制作:谢建华,修订:孟宝兴)
Discover Topics
Angles
Kite
Parabola
Division
Isosceles Triangles