To make sure the poem is beautiful while reading or singing it, the poets have to make sure that the math of syllables is set right!
Even though most of the poets would not care about the syllables or the rhyming, the counting of syllables in each of the line of the poem would make it sound very musical. It would also be easier for singing such well-planned and phrased poetry that has uniform number of syllables in each line. It is common to have four, six, eight or even number of syllables in each line, whereas the odd number of syllables are also common.
Number of Lines:
It is always good to maintain a minimum of two lines of equal syllables often called as couplet, while four is also a common type, which is called as a quartet. Two of such quartets are called as Octave in poetry, while six lines with uniform number of syllables is called as sestet. For instance, a sonnet is a poetry that would have a total of fourteen lines of which the first 8 lines are formed by 2 quartets, while the last 6 lines are formed by 2 tercets (three line rhyming lines).
Either the starting of the lines rhyme with each other or the endings rhyme, while the latter is the most common form used. The rhyming could be a-b-a-b or a-a-b-b in case of quartets, whereas a sestet would have a-b-c-a-b-c or a-a-b-b-c-c or a-b-a-b-c-c patterns in common.
While patterns are seen within a single verse which could be of 4-line, 6-line or 8-line length, there would be just one or so many verses in poetry to enable the poet to convey their viewpoints. The poet should be a mathematician to know the pattern, as both are creative arts, if seen in the right light!
By learning to see lots of relations between Mathematics and English, even kids would love to lean the art of poetry easily.