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Polygonal numbers
Author:
Tung Chao
Topic:
Numbers
Use triangular and square numbers to investigate number patterns
GeoGebra
New Resources
三位數除以一位數（二）
四邊形的特性
錐體建築師
兩組對邊相等和有直角的四邊形
判斷球體
Discover Resources
AP的中點所形成的圖形
Drawing quadrilaterals on the grid or the pinboard
轉動的水箱
图形的放大与缩小.许兴华数学
三阶魔方（magic cube）
Discover Topics
Median Value
General Quadrilateral
Vectors 2D (Two-Dimensional)
Geometric Transformations
Similarity Transformation or Similarity