# A crow-stepped gable

The crow-stepped gable of this building, in Bolzano, recalls a geometric solution to a problem with numbers: what is the sum of the first n odd numbers?

This example has been used in one of the ten signposts of the MIC project "Maths in the city", where the following question is posed: which is the sum of the house numbers on one of the two sides of Streiter street?

© matematita

foto di Ester Dalvit

The image belongs to the sections...:

The spots shown in the maths signposts (Exhibitions with matematita)

Numbers (Numbers)

Roofs and domes (Symmetry)

Further information:

http://www.matematicaincitta.bz.it/