1. círculo   perimeter   line   circle   radius   Hint Half-n-half Clue   2. linha   diameter   line   sphere   cylinder   Half-n-half Clue   3. cubo   cube   sphere   circumference   perimeter   Half-n-half Clue   4. retângulo   rectangle   circumference   square   cube   Half-n-half Clue   5. raio   radius   sphere   perimeter   cone   Half-n-half Clue   6. semicírculo   cone   sphere   semicircle   curve   Half-n-half Clue   7. circunferência   circle   cube   area   circumference   Half-n-half Clue