A poet‘s use of regular rhythm is known as _______?

A poet's use of regular rhythm is known as "metre." Metre refers to the pattern of stressed and unstressed syllables in a line of poetry. This pattern creates a rhythmic beat that helps to create a particular mood or feeling in the reader. For example, a poem with a regular and steady metre might create a sense of stability or order, while a poem with an irregular or unpredictable metre might create a sense of chaos or confusion. Metre is one of the key elements of poetry and is often used in conjunction with other poetic devices, such as rhyme, to create a memorable and powerful piece of writing.