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Author:
俞光隆
GeoGebra
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第三周作业效果演示
平行線的判定
中华人民共和国国旗
盈利與虧蝕
科氏力 (Coriolis Force)
Discover Resources
Locus 軌跡(3T)
十字立方體
正方形面積
Torus
ghseh 二次函數描點法上下平移-6
Discover Topics
Polygons
Coordinates
Set Theory
Isosceles Triangles
Subtraction