1. ellipse   heimen   chouen   hankyuutai   heikousen   Hint Half-n-half Clue   2. hexagon   hankyuutai   rokkakei   heimen   kousen,rei   Half-n-half Clue   3. straight line   shichikakkei   totsumen   suisen   chokusen   Half-n-half Clue   4. quadrilateral   kukiri,bubun   shihenkei   fuchi、hashi   heikoushihenkei   Half-n-half Clue   5. segment   shihenkei   kousen,rei   kukiri,bubun   rankei   Half-n-half Clue   6. polygon   shichikakkei   fuchi、hashi   kousen,rei   takakkei   Half-n-half Clue   7. pyramid   heimen   piramiddo   fuchi、hashi   kousen,rei   Half-n-half Clue