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