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二次函数y=ax²（a＞0)
Author:
吕胜
GeoGebra
New Resources
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
判斷球體
拼砌四邊形
畫出對稱圖形
Discover Resources
http://www.qsir.org/?p=8853
Heat Sink Fin
乘法表的自动练习的副本
鸚鵡螺旋線
自學材料_兩位數乘兩位數
Discover Topics
Square
Incircle or Inscribed Circle
Calculus
Circumcircle or Circumscribed Circle
Normal Distribution