Breakdown of Se había construido el armazón con mucha simetría.
mucho
many / a lot
con
with
construir
to build
se
(impersonal) one / passive marker
Questions & Answers about Se había construido el armazón con mucha simetría.
Why use Se había construido instead of Había sido construido?
Both translate to "had been built," but Spanish strongly prefers the passive se (se había construido) when the "doer" of the action is unknown or unimportant. The literal passive with ser (había sido construido) sounds much more formal or translated from English, so you will hear the passive se much more often in everyday speech.
Why is the subject (el armazón) placed after the verb (Se había construido)?
Words ending in -zón are often feminine. Why is it el armazón here?
Armazón (meaning frame or framework) is an "ambiguous noun," meaning it can be either masculine (el armazón) or feminine (la armazón) without changing its meaning. In Latin America, it is most commonly treated as masculine. Keep in mind that while many words ending in -zón are feminine, there are other common masculine exceptions like corazón and buzón.
This lesson is about using con + infinitive to mean "even though." Is that what is happening with ?