1. circonferenza   perimeter   point   curve   circumference   Hint Half-n-half Clue   2. semicerchio   perimeter   curve   volume   semicircle   Half-n-half Clue   3. triangolo   square   rectangle   triangle   diameter   Half-n-half Clue   4. diametro   cylinder   triangle   circumference   diameter   Half-n-half Clue   5. volume   cylinder   sphere   volume   area   Half-n-half Clue   6. rettangolo   square   rectangle   cylinder   semicircle   Half-n-half Clue   7. lato   circle   side   diameter   cylinder   Half-n-half Clue