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Right Triangles in a Circle 圓內的直角三角形
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
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相對與絕對角速度
Area and Volume of a pentagonal prism(正五角棱柱的面積和體積)
封閉區域填色
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Discover Topics
Tangent Function
Orthocenter
Intersection
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Circumcircle or Circumscribed Circle