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特殊四边形的转换
Author:
周高飞
Topic:
Quadrilaterals
尝试拖动四个滑动条的大小，观察图形的变化
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數加法
錐體建築師
判斷球體
第八周作业
Discover Resources
Lab 3 Task 1 : Rectangle Construction
緯度、日照、影子長。
六年級_截面_柱體_多邊形
線的面化
圆锥曲线
Discover Topics
Natural Numbers
Definite Integral
Sequences and Series
Triangles
Upper and Lower Sum or Riemann Sum