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畢氏定理2
Author:
吳桓萱
GeoGebra
New Resources
四邉形 (四年級) 教師版
三位數除以一位數（二）
画直线等分三角形的面积
畫出對稱圖形
三位數除以一位數（一）
Discover Resources
Triangle 02
Drawing quadrilaterals on the grid or the pinboard
象限
等分旋轉
第二次:20190110
Discover Topics
Straight Lines
Isosceles Triangles
Geometric Mean
Cube
Combinatorics