1. convexo   polygon   vertex   parallelogram   convex   Hint Half-n-half Clue   2. quadrilátero   parallel lines   quadrilateral   polygon   hexagon   Half-n-half Clue   3. hexágono   convex   concave   ray   hexagon   Half-n-half Clue   4. raio   hemisphere   edge   quadrilateral   ray   Half-n-half Clue   5. oval   ray   oval   pyramid   parallel lines   Half-n-half Clue   6. losango, rombo   parallel lines   vertex   polygon   rhombus   Half-n-half Clue   7. segmento   segment   parallel lines   hexagon   straight line   Half-n-half Clue