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sin(弳)
Author:
陳柄何
GeoGebra
New Resources
圓的基本性質
第八周作业1
中华人民共和国国旗
活动三：应用性质
第三周作业效果演示
Discover Resources
Time
Quiz on True Bearings 真方位角：測驗
垂直1
向外延伸的多邊形
图形的放大与缩小.许兴华数学
Discover Topics
Linear Functions
Line Segment
Rotation
Vectors 2D (Two-Dimensional)
Plane Figures or Shapes