1. perimetro   perimeter   sphere   cone   area   Hint Half-n-half Clue   2. superficie   curve   angle   area   square   Half-n-half Clue   3. rettangolo   triangle   diameter   cylinder   rectangle   Half-n-half Clue   4. circonferenza   cone   point   cube   circumference   Half-n-half Clue   5. triangolo   triangle   cylinder   circle   cube   Half-n-half Clue   6. sfera   diameter   square   sphere   line   Half-n-half Clue   7. cerchio   triangle   square   cone   circle   Half-n-half Clue