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三角函数值
Author:
谭伟
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數（一）
三位數除以一位數（一）
錐體建築師
拼砌四邊形
Discover Resources
千年曆2
電子幾何條
數列
P4構作對稱圖形
S408 Penrose 階梯
Discover Topics
Bar Chart or Bar Graph
Pythagoras or Pythagorean Theorem
Similarity Transformation or Similarity
Mathematics
Rectangle