1. cubo   circle   cube   triangle   radius   Hint Half-n-half Clue   2. rectángulo   rectangle   triangle   sphere   square   Half-n-half Clue   3. triángulo   volume   triangle   area   semicircle   Half-n-half Clue   4. radio   radius   rectangle   cylinder   volume   Half-n-half Clue   5. perímetro   curve   perimeter   circle   diameter   Half-n-half Clue   6. cilindro   cylinder   line   triangle   area   Half-n-half Clue   7. circunferencia   radius   side   cube   circumference   Half-n-half Clue