The SonnetOnline version Terms by KL Kaki 1 Term 2 Definition Petrarchan form The sonnet Shakespearean form is a 14- line lyric poem with a complicated rhyme scheme and a defined structure. has a two-part structure. The octaveand sestet has 14 lines • Three quatrains (stanzas of 4 lines) are followed by a rhyming couplet (2 lines).