1. prisma   straight line   quadrilateral   prism   quadrangle   Hint Half-n-half Clue   2. polígono   ellipse   concave   polygon   convex   Half-n-half Clue   3. plano   prism   plane   straight line   parallelogram   Half-n-half Clue   4. borde   pentagon   hemisphere   heptagon   edge   Half-n-half Clue   5. pirámide   vertex   pyramid   plane   oval   Half-n-half Clue   6. elipse   quadrangle   pentagon   ellipse   perpendicular lines   Half-n-half Clue   7. cima   vertex   concave   hemisphere   perpendicular lines   Half-n-half Clue