1. cone   chokkei   ensui   kaku   kukei   Hint Half-n-half Clue   2. area   sanjoo、rippoutai   kyakusen,　kaabu   menseki   ten   Half-n-half Clue   3. circle   shikakukei   kyuu   sen   maru   Half-n-half Clue   4. rectangle   kaku   shikakukei   kyuu   kukei   Half-n-half Clue   5. sphere   kyuu   kukei   sankakukei   gawa   Half-n-half Clue   6. square   chokkei   shikakukei   hankei   enryuu   Half-n-half Clue   7. perimeter   hanen   shuuichou   ensui   maru   Half-n-half Clue