The original form of the sonnet is called the Italian sonnet or the Petrarchan sonnet. There are various forms of sonnets and each have different rhyme patterns.
Or follow this line out of Shakespeare's Sonnet 18 'Shall I compare thee to a summer's day?' If you are having trouble with iambic pentameter read some Shakespeare. Iambic pentameter is a line made up of five beats. It is made up of fourteen lines of rhymed iambic pentameter. The sonnet is one of the fixed forms in poetry.
