1. parallel lines   touchou   totsumen   heikousen   shikakkei   Hint Half-n-half Clue   2. parallelogram   ryoukei、hasuhoukei   piramiddo   heikousen   heikoushihenkei   Half-n-half Clue   3. polygon   oumen   rankei   takakkei   kousen,rei   Half-n-half Clue   4. prism   gokakkei   touchou   piramiddo   purizumu   Half-n-half Clue   5. segment   heikoushihenkei   kukiri,bubun   chouen   hankyuutai   Half-n-half Clue   6. rhombus   ryoukei、hasuhoukei   piramiddo   touchou   takakkei   Half-n-half Clue   7. edge   fuchi、hashi   shichikakkei   oumen   heikousen   Half-n-half Clue