An unrhymed seven line poem is called a Rhapsod.
No, not every line in a poem has to rhyme. Poets often use a mix of rhymed and unrhymed lines to create rhythm and flow in their work. Free verse poetry, for example, emphasizes creative expression without strict rhyme or meter.
Unrhymed iambic pentameter
A 10-line poem is called a decastich and a 13-line poem is called a terza rima.
A poem with four lines is called Quatrain
seven
its called nothing, it is just a 32 line poem.
A traditional Japanese choka poem typically consists of five and seven syllables alternating in each line, with an extra line of seven syllables at the end. So, a choka poem usually has a total of 31 syllables.
it is called a butt
its called a sonnet
elegy
Sestets
An eighteen line poem is aclled as "SONNET."