1. 点   area   point   sphere   angle   Hint Half-n-half Clue   2. 周囲長   perimeter   rectangle   radius   sphere   Half-n-half Clue   3. 半径   semicircle   radius   line   cylinder   Half-n-half Clue   4. 半円   semicircle   area   radius   perimeter   Half-n-half Clue   5. 線　   circumference   perimeter   cube   line   Half-n-half Clue   6. 面積   triangle   angle   area   diameter   Half-n-half Clue   7. 角   rectangle   line   angle   radius   Half-n-half Clue