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Activity 2
Author:
lamanleung
GeoGebra
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画直线等分三角形的面积
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
球体的体积推导
【案例】2013年安徽高考15题
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習題二
Drag the red dots, see the area ratio of EHFG to ABCD
Question 1
学用数学（分季）
兩條直線垂直應用
Discover Topics
Symmetry
Conic Sections
Centroid or Barycenter
Frequency Distribution
Incircle or Inscribed Circle