Questions & Answers about Scutum e ferro factum est.
Scutum is nominative singular.
It is the subject of the sentence: the thing that was made.
A learner may expect the subject to come first in Latin sometimes, and here it does:
- scutum = the shield
Because scutum is a neuter noun, other words that describe it will also appear in neuter singular form if they agree with it.
Because factum has to agree with scutum.
- scutum is neuter
- scutum is singular
- scutum is nominative
So the participle must also be:
- neuter
- singular
- nominative
That gives factum.
If the noun were masculine, you would expect factus.
If it were feminine, you would expect facta.