1. polígono   polygon   quadrilateral   plane   pentagon   Hint Half-n-half Clue   2. elipse   pyramid   oval   ellipse   concave   Half-n-half Clue   3. pirâmide   pyramid   rhombus   parallelogram   convex   Half-n-half Clue   4. borda   edge   concave   quadrilateral   quadrangle   Half-n-half Clue   5. prisma   plane   rhombus   ellipse   prism   Half-n-half Clue   6. plano   pentagon   convex   plane   quadrilateral   Half-n-half Clue   7. quadrilátero   quadrangle   perpendicular lines   ray   concave   Half-n-half Clue