1. perímetro   semicircle   volume   perimeter   cylinder   Hint Half-n-half Clue   2. ángulo   curve   rectangle   angle   semicircle   Half-n-half Clue   3. circunferencia   area   circumference   rectangle   cone   Half-n-half Clue   4. esfera   cube   line   circle   sphere   Half-n-half Clue   5. punto   point   square   perimeter   rectangle   Half-n-half Clue   6. radio   square   radius   area   cone   Half-n-half Clue   7. rectángulo   circle   point   sphere   rectangle   Half-n-half Clue