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You could become my hero ;-))) Bring together your idea about a wheel and my former information!

 3 years ago (edited)

now I have no doubt only that the object is round or in the shape of a torus :) . I will think further. Perhaps we need to guess the surface on which this torus is rolling?

Then it looks like puddles among the melted snow...

Round. For sure. But not closer than before ;-))

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