1. yuan zhou   cone   circumference   radius   perimeter   Hint Half-n-half Clue   2. [bian;bian]   semicircle   triangle   side   cube   Half-n-half Clue   3. rong [liang;liang]   triangle   circumference   volume   point   Half-n-half Clue   4. qiu xing   semicircle   side   sphere   rectangle   Half-n-half Clue   5. [qu;qu] xian   area   angle   curve   cube   Half-n-half Clue   6. [juan;juan;quan] zi   angle   circle   semicircle   square   Half-n-half Clue   7. [zheng;zheng] fang xing   rectangle   angle   side   square   Half-n-half Clue