What type of poetry consists of unrhymed lines with a regular rhythm, often in iambic pentameter?

The type of poetry that consists of unrhymed lines with a regular rhythm, often in iambic pentameter, is known as blank verse. This form is characterized by its use of a consistent meter, which typically adheres to iambic pentameter, making it a staple in English dramatic and narrative poetry. Notably, Shakespeare frequently employed blank verse in his plays, allowing for a natural flow of speech while still maintaining a structured rhythm.

Other forms mentioned, such as free verse, do not adhere to a specific meter or rhyme scheme, thus resulting in a more unpredictable and varied line structure. Couplets consist of two consecutive rhymed lines, which contrasts sharply with the unrhymed nature of blank verse. Stanza refers to a grouped set of lines within a poem, but it does not denote any particular rhythmic or rhyming pattern. Blank verse stands out for its combination of regular rhythm without rhyme, making it a distinctive and widely used poetic form.