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旋转的线段组成面
Author:
乔永海
Topic:
Line Segment
,
Rotation
GeoGebra
New Resources
近似值：有效數字
長方體平面投影 (Codex版)
Nested spiral octagon
美國國旗 (Codex 版)
兩組對邊相等的四邊形
Discover Resources
對稱及變換
畢氏定理的證明(三移動)
hihihi
三角形的构成的副本
祖冲之的期望：内棋与外棋
Discover Topics
Bar Chart or Bar Graph
Variance
Confidence Interval
Plane Figures or Shapes
Expected Value