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根據百分率找數量（一）: 例4的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
柱體建築師
判斷球體
球体的体积推导（优化版）
兩組對邊相等的四邊形
球体的体积推导
Discover Resources
Section Curves
梯形(面積)
Drag blue dots, any observation about H,G,O?
相机光圈模拟（3D）
活工(二)Q3
Discover Topics
Similarity Transformation or Similarity
Upper and Lower Sum or Riemann Sum
Triangles
Polygons
Incircle or Inscribed Circle