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凹正方形
Author:
王玉霞
GeoGebra
New Resources
柱體建築師
四邊形的特性
異分母分數減法
【案例】2013年安徽高考15题
球體建築師
Discover Resources
兩外切圓之外公切線作圖法
堆垛六顆橘子
String Art
Locus: Equidistance From Two Points
學習活動四平行線法的原理
Discover Topics
Subtraction
Polygons
Centroid or Barycenter
Ellipse
Numbers