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完整地球儀
Author:
黃俊翔
GeoGebra
New Resources
第八周作业1
球体的截面
平行線的判定
第八周作业2
盈利與虧蝕
Discover Resources
zhengming
Copy of 平行四邊形的面積
纏繞畫2
旋轉線段
用平面截圆锥
Discover Topics
Secant Line or Secant
Orthocenter
Probability
Pythagoras or Pythagorean Theorem
General Quadrilateral