Four feet in a line of poetry, six feet in a line of poetry, etc. is talking about the meter. Therefore, hexameter is a six feet line of poetry. Tri- would be three, and octo- would be 8. Rhyme is repetition in sounds. The differences between true and slant: slant means the lines end in similar, but NOT IDENTICAL sounds whereas true would be identical. Rhythm is the stressing of syllables. Syllable is a word or part of a word, and to mute would be to soften.
