1. millimeter, _______ , decimeter, meter   centimeter   kilometer   decameter   nanometer   Hint Half-n-half Clue   2. triangle, rectangle, pentagon, _______   octagon   heptagon   square   hexagon   Half-n-half Clue   3. amble, _______ , jog, run   crawl   walk   creep   sprint   Half-n-half Clue   4. North Pole, Arctic Circle, _______ , Equator   South Pole   Tropic of Capricorn   Tropic of Cancer   Antarctic Circle   Half-n-half Clue   5. word, sentence, _______ , chapter   index   book   paragraph   line   Half-n-half Clue   6. millisecond, second, _______ , hour   day   first   third   minute   Half-n-half Clue   7. Earth, Jupiter, _______ , Pluto   Mercury   Uranus   Venus   Mars   Half-n-half Clue