1. 三乗、立方体、   semicircle   sphere   circumference   cube   Hint Half-n-half Clue   2. 側   circle   sphere   side   cylinder   Half-n-half Clue   3. 角   area   cylinder   perimeter   angle   Half-n-half Clue   4. 曲線,   curve   radius   angle   cylinder   Half-n-half Clue   5. 円錐   cone   angle   triangle   rectangle   Half-n-half Clue   6. 線　   rectangle   curve   line   angle   Half-n-half Clue   7. 周囲長   square   perimeter   area   circumference   Half-n-half Clue