1. hankei   circle   side   radius   circumference   Hint Half-n-half Clue   2. enryuu   cube   cylinder   circumference   side   Half-n-half Clue   3. kyakusen,　kaabu   curve   circle   cylinder   line   Half-n-half Clue   4. gawa   line   point   side   cylinder   Half-n-half Clue   5. shikakukei   cylinder   square   line   area   Half-n-half Clue   6. kyuu   circle   circumference   semicircle   sphere   Half-n-half Clue   7. maru   point   circle   cone   area   Half-n-half Clue