1. polígono   ray   quadrangle   polygon   hexagon   Hint Half-n-half Clue   2. pentágono   quadrangle   segment   pentagon   edge   Half-n-half Clue   3. quadrilátero   quadrilateral   concave   hexagon   quadrangle   Half-n-half Clue   4. prisma   straight line   prism   plane   pentagon   Half-n-half Clue   5. hemisfério   concave   hemisphere   segment   parallelogram   Half-n-half Clue   6. pirâmide   pyramid   plane   ellipse   quadrilateral   Half-n-half Clue   7. paralelogramo   vertex   parallelogram   convex   edge   Half-n-half Clue