Answer:
-Each couplet expresses a complete thought.
-The couplets are written in iambic pentameter.
-The last word in the two lines that make up the couplet rhyme.
Step-by-step explanation:
Heroic couplet: Two successive lines of rhymed poetry iambic pentameter, named for its use in the composition of epic poetry in the seventeenth and eighteenth centuries. In neoclassical use the two lines had to express a complete one, therefore a closed couplet, with a subordinate pause at the end of the first line. Heroic couplets, which are well suited to antithesis and parallelism, are also often used for epigrams.