Final answer:
Common meter in poetry follows a rhythmic pattern of stressed and unstressed syllables, creating the meter of a poem.
Step-by-step explanation:
Common meter, often written as '_____________ _____________,' follows the rhythmical pattern of stressed and unstressed syllables. This pattern creates the meter of a poem. For example, a common meter could be 'SAME DIFFERENT SAME DIFFERENT' or 'DUM de DUM de.' It is a way of organizing the rhythm in poetry.