1. diametro   semicircle   cone   perimeter   diameter   Hint Half-n-half Clue   2. volume   side   cube   volume   curve   Half-n-half Clue   3. curva   diameter   square   semicircle   curve   Half-n-half Clue   4. triangolo   radius   circle   side   triangle   Half-n-half Clue   5. cerchio   radius   triangle   rectangle   circle   Half-n-half Clue   6. cilindro   cylinder   area   square   diameter   Half-n-half Clue   7. circonferenza   circumference   radius   cone   angle   Half-n-half Clue