1. 線　   square   radius   point   line   Hint Half-n-half Clue   2. 半径   curve   point   radius   circumference   Half-n-half Clue   3. 周囲長   cone   semicircle   point   perimeter   Half-n-half Clue   4. 点   radius   rectangle   point   semicircle   Half-n-half Clue   5. 側   side   diameter   cube   angle   Half-n-half Clue   6. 面積   circumference   radius   diameter   area   Half-n-half Clue   7. 矩形   rectangle   circle   circumference   triangle   Half-n-half Clue