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旋转的线段组成面
Author:
乔永海
Topic:
Line Segment
,
Rotation
GeoGebra
New Resources
拼砌四邊形
三位數除以一位數（一）
画直线等分三角形的面积
四邉形 (四年級) 教師版
異分母分數減法
Discover Resources
圓圓求切圓
特別角的三角函數值(1)
角平分線
Copy of Finding the H.C.F. and the L.C.M.
圖形的周界
Discover Topics
Similar Triangles
Multiplication
Stochastic Process or Random Process
Incircle or Inscribed Circle
Plane Figures or Shapes