There really is no methodology called "Agile". There are things like Scrum, SAFE, AUP, XP, etc. Some of those may or may not mandate things like "sprints", but the essence of agile (the Agile Manifesto) doesn't even mention the term "sprint".
The closest it gets to that is where it say:
We follow these principles:
<snip>
Deliver working software frequently, from a
couple of weeks to a couple of months, with a
preference to the shorter timescale.
The closest it gets to that is where it say:
We follow these principles:
<snip>
Deliver working software frequently, from a couple of weeks to a couple of months, with a preference to the shorter timescale.
<snip>