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對摺平行四邊形
Author:
hingchan
GeoGebra
New Resources
GeoGebra笔记功能体验课件
拼砌四邊形
【案例】2013年安徽高考15题
判斷球體
錐體建築師
Discover Resources
glt-h02-06 平行四邊形柱展開
畢氏定理學生(林辰洋)
圓內兩半圓相切問題
弹簧的副本
学用数学（分季）
Discover Topics
Secant Line or Secant
Incircle or Inscribed Circle
Linear Regression
Area
Division