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30度直角三角形
Author:
郭勇
GeoGebra
New Resources
【案例】2013年安徽高考15题
算柱 (兩位數)
找出對稱軸
畫出對稱圖形
四邉形 (四年級) 教師版
Discover Resources
waaachen
三角形內角和(SWC)
正弦公式1
因數(1至48)
平面截圆柱体
Discover Topics
Plane Figures or Shapes
Matrices
Percentages
Perimeter
Rotation