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Author:
Keung
GeoGebra
New Resources
三角函数 的副本
平行線的判定
圓的基本性質
盈利與虧蝕
第三周作业效果演示
Discover Resources
waaachen
折扣 例2
新疆八卦城
竞猜游戏:说出图中角的大小
正四面体的切接球
Discover Topics
Line Segment
Rotation
Triangles
Vectors
Linear Programming or Linear Optimization