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圖解兩向量所張開之平行四邊形面積
办毕业 证学历扣薇374936141，
no.1
宋小喵第6个作品
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陳人瑜01
Transit of Venus - Pentagram
Angle at centre twice angle at circumference
Larry's Clock
GeoGebra 動畫開關按鈕製作的副本
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Perimeter
Cylinder
Rotation
Centroid or Barycenter
Geometry
