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excerpt
Author:
黃斌
GeoGebra
New Resources
中华人民共和国国旗
球体的截面
第八周作业1
第八周作业3
第八周作业2
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貝茲曲線
一組物件的幾分之幾
prism
geogebra
第一次尝试
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Translation
Quadrilaterals
Means
Square
Centroid or Barycenter