1. convexo   convex   rhombus   ellipse   polygon   Hint Half-n-half Clue   2. hemisfério   straight line   convex   ellipse   hemisphere   Half-n-half Clue   3. quadrilátero   hemisphere   plane   quadrangle   parallelogram   Half-n-half Clue   4. paralelogramo   parallelogram   edge   hexagon   concave   Half-n-half Clue   5. raio   parallelogram   edge   polygon   ray   Half-n-half Clue   6. reta, linha reta   oval   pyramid   straight line   vertex   Half-n-half Clue   7. elipse   hexagon   concave   plane   ellipse   Half-n-half Clue