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封閉圖形的斜線區域
Author:
張道民
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
柱體建築師
錐體建築師
Discover Resources
正方體的旋轉對稱
數位學習社12/15
Centres
放大／縮小 Resize
Copy of 費氏螺旋 (試算表)
Discover Topics
Stochastic Process or Random Process
Pyramid
General Quadrilateral
Statistics
Secant Line or Secant