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國八：乘法公式與多項式-分項對消_乘法
Author:
賴尚欣
GeoGebra
New Resources
柱體建築師
兩位數除以一位數（一）
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
畫出對稱圖形
Discover Resources
圓柱的截面
反演的應用：鞋匠的小刀
Exterior Angle Cyclic Quadrilateral
滑桿
旋轉對稱 Rotational symmetry
Discover Topics
Cube
Ellipse
Incircle or Inscribed Circle
Means
Confidence Interval