By Mark Favermann
Two campus structures and one downtown office building speak a new visual language.

Early on in their education, long before Euclid drew circles and triangles, most architects and urban designers had fallen in love with geometry, which is a branch of mathematics concerned with the shape of individual objects, spatial relationships among various objects, and the properties of surrounding space. That is also a description of architecture and urban design: the careers of the most successful designers have always focused on working and reworking geometry.
The last two decades of construction in Boston has yielded mostly — like the Seaport District, upper Boylston Street in the Fenway, and the Edge City on Guest Street in…