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Perigal's Dissection
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
画直线等分三角形的面积
兩位數除以一位數(一)
三位數除以一位數(二)
畫出對稱圖形
兩組對邊相等和有直角的四邊形
Discover Resources
由組織圖到頻數多邊形
平行4
七角柱(可側轉、上下轉)
三角柱
固定周界的長方形的面積變化(周界是200厘米)
Discover Topics
Circumcircle or Circumscribed Circle
Algebra
Scalene Triangles
Incircle or Inscribed Circle
Upper and Lower Sum or Riemann Sum