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Upside Down?
Author:
Anthony OR 柯志明
Topic:
Circle
A coin is rolling around another fixed identical coin without slipping. If the coin starts with the head up, is the coin head up or down when it is directly opposite to its starting position, as indicated by the dotted circle?
GeoGebra
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Rose Curve
Rolling Circles and Polygons
רישום חופשי
အခြေခံ data အခေါ်အဝေါ်များ
Some random function
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similar right angle triangles
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