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根據百分率找數量（二）: 例4的副本
Author:
音节-Lisa
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
四邊形的特性
判斷球體
第八周作业
兩組對邊相等的四邊形
球体的体积推导（优化版）
Discover Resources
PMC 2014-15 Q1
滑杆的數字接力賽-平移旋轉三角形填滿四邊形(加邊框)
梯形堆垛
拋物線代數性質,光學性質
matrix of rotation transformation
Discover Topics
Similar Triangles
Arithmetic
Upper and Lower Sum or Riemann Sum
Calculus
Diagrams