1. cubo   diameter   rectangle   radius   cube   Hint Half-n-half Clue   2. curva   radius   circumference   curve   angle   Half-n-half Clue   3. diametro   diameter   volume   side   area   Half-n-half Clue   4. cerchio   cylinder   area   triangle   circle   Half-n-half Clue   5. circonferenza   circle   circumference   perimeter   square   Half-n-half Clue   6. lato   sphere   square   side   triangle   Half-n-half Clue   7. linea   semicircle   point   perimeter   line   Half-n-half Clue