A wooden floor

Pavimento in legno presso la casa natale di Antonio Rosmini, Rovereto (Tn). Il disegno del...

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Area and similitude

Two mirrors at 60° to show that by doubling the side of an equilateral triangle you get a...

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Regular polygons

Regular equilateral polygons. The area increases when the number of sides increases, and p...

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A tessellation of the plane

You can tessellate the plane using as tiles a square and an equilateral triangle of equal ...

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A paving 22×

A paving with symmetry of type 22×. You can see a detail.

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A paving 3*3

In viale Monza, in Milan, a pavement provides an example of pattern 3*3. This pattern can ...

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Un pavimento

Un pavimento con simmetria di tipo *632, a Roma, nella basilica di S.Maria in Trastevere. ...

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Circular annuli

A suggestion of concentric circular annuli in this photo from the West Coast of Australia.

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Circles over the years

This section of a trunk presents growth rings

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Cerchi della stufa

I cerchi di una tradizionale stufa a legna.

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