Questions & Answers about Lectio quarta brevis est.
All three main words are in the nominative singular:
- lectio = nominative singular
- quarta = nominative singular feminine
- brevis = nominative singular feminine
- est = is
This is because lectio is the subject, and both quarta and brevis describe that subject.
Because quarta has to agree with lectio.
Lectio is:
- feminine
- singular
- nominative
So the ordinal adjective quartus, -a, -um must also be:
- feminine
- singular
- nominative
That gives quarta.
Because brevis is a predicate adjective after est. In Latin, a predicate adjective normally matches the subject in case, number, and gender.
Since lectio is nominative singular feminine, is also nominative singular feminine.