GeoGebra
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2012新年快樂
Author:
skmylmomg
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Cursive k
Cursive s
Cursive g
多边形密铺验证
Cursive t
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Quadrilateral 1
solid of revolution, shell 1
Untitled
Box with Open Top
B field around a wire的副本
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Plane Figures or Shapes
Rhombus
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Polynomial Functions
Linear Functions