1. triangle, rectangle, pentagon, _______   square   octagon   heptagon   hexagon   Hint Half-n-half Clue   2. day, _______ , month, year   hour   century   decade   fortnight   Half-n-half Clue   3. bat, sheep, _______ , elephant   horse   blue whale   rat   squirrel   Half-n-half Clue   4. millisecond, second, _______ , hour   third   day   minute   first   Half-n-half Clue   5. heel, knee, chest, _______   foot   waist   neck   ankle   Half-n-half Clue   6. word, sentence, _______ , chapter   line   index   book   paragraph   Half-n-half Clue   7. egg, _______ , pupa, butterfly   cocoon   spawn   tadpole   larva   Half-n-half Clue