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GeoGebra
圖四
作者：
GeoGebra Institute of Hong Kong
Topic:
Circle
Related Topics
Triangles
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五棱柱
机电2班傅怀恩
橢圓規Ellipsograph (Trammel of Archimedes)
cos, sin 與單位圓的副本
平面截立方体
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Geometry
Constructions
Plane Figures or Shapes
Triangles
Quadratic Functions