1. hemisferio   hemisphere   perpendicular lines   convex   plane   Hint Half-n-half Clue   2. plano   hemisphere   plane   ellipse   quadrangle   Half-n-half Clue   3. óvalo   convex   pyramid   parallel lines   oval   Half-n-half Clue   4. cuadrilátero   hexagon   quadrangle   straight line   hemisphere   Half-n-half Clue   5. heptágono   polygon   edge   heptagon   hemisphere   Half-n-half Clue   6. línea recta   concave   prism   quadrilateral   straight line   Half-n-half Clue   7. borde   edge   oval   ellipse   segment   Half-n-half Clue