Question

What’s the easiest way to tell if a poem is a sonnet?

Answer 1

sonnets are divided into different groups based on the rhyme scheme they follow.
Sonnet - Definition and Examples of Sonnets - Literary Deviceshttps://literarydevices.net/sonnet/

Answer 2

The sonnet form has been changed and adapted over the years, however there are two main structures that poets use when writing sonnets.

A Petrarchan sonnet has 14 lines and is structured as an octave (8 line stanzas) and a sestet (6 line stanzas). Its rhyme scheme is usually abababab cdcdcd / cdecde.