A cant in architecture is an angled line or surface that cuts off a corner. Something with a cant is canted.
The Chiesa del Purgatorio, Ragusa: the facade are angled (canted) back from the centre.
County Hall, Aylesbury with canted recesses
A façade or facade is the front part or exterior of a building. It is a loanword from the French façade, which means "frontage" or "face".
Cant (architecture)
…A cant in architecture is an angled (oblique-angled) line or surface that cuts off a corner. Something with a cant is canted. Canted façades are a typical of, but not exclusive to, Baroque architecture. The angle breaking the façade is less than a right angle, thus enabling a canted façade…
Carlo Maderno's monumental façade of St. Peter's Basilica in Vatican City
The façade of the Panthéon in Paris illuminated at night on 27 May 2015 for the admittance of Germaine Tillion, Geneviève de Gaulle-Anthonioz, Pierre Brossolette and Jean Zay to the mausoleum
Façade of a 1st-century CE Roman domus in Pompeii, Italy
Part of the Central University Library of Bucharest (Romania)