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國旗
Author:
王正豪
國旗
GeoGebra
New Resources
兩位數加法
錐體建築師
球体的体积推导（优化版）
找出對稱軸
兩組對邊相等的四邊形
Discover Resources
圖騰 DEMO
圓與兩平行切線
P6 圓周03B
F3 Ch9.3 羅盤及真方位角
兩組對邊相等的四邊形
Discover Topics
Mathematics
Pythagoras or Pythagorean Theorem
Vectors 2D (Two-Dimensional)
Subtraction
Confidence Interval