1. めんせき   area   diameter   radius   cone   Hint Half-n-half Clue   2. てん   triangle   semicircle   radius   point   Half-n-half Clue   3. きゃくせん、   line   angle   curve   circle   Half-n-half Clue   4. えんとう、   cylinder   perimeter   sphere   square   Half-n-half Clue   5. せん   circle   cube   angle   line   Half-n-half Clue   6. しかくけい   square   sphere   perimeter   circumference   Half-n-half Clue   7. がわ   semicircle   side   area   cone   Half-n-half Clue