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The spirals in a shell are logarithmic spirals, different from the one which is shown here...
The spirals we see in a shell are logarithmic spirals, different from archimedean spirals,...
One of the ten signposts of the MIC project "Maths in the city". This one is placed near p...
In Bolzano it is rather common to see buildings decorated like this one with an archimede...
In Bolzano it is rather common to see buildings decorated like this one with an archimede...
In Bolzano it is rather common to see buildings decorated like this one with an archimede...
In Bolzano it is rather common to see buildings decorated like this one with an archimede...
Tre rosoni sulla facciata della chiesa presbiteriana di Choong Hyun, a Seul. In tutti e tr...
Ci si può domandare se parallelismo e perpendicolarità verranno conservati nell'ombra......
Rette parallele restano parallele nell'ombra (solare) di un oggetto, mentre l'ombra di due...
