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No.2
Author:
Khmaths
GeoGebra
New Resources
四邉形 (四年級) 教師版
三位數除以一位數（一）
四邊形的特性
找出對稱軸
兩位數除以一位數（二）
Discover Resources
chap. 1 by ck
優良作品3(祥恩)
gjh-h04-01 多個堆疊的直角三角形
Rotational and reflectional symmetry of a regular polygon
中華民國國旗
Discover Topics
Rotation
Binomial Distribution
Equilateral Triangles
Correlation
Upper and Lower Sum or Riemann Sum