1. convexo   hexagon   ellipse   convex   perpendicular lines   Hint Half-n-half Clue   2. líneas paralelas   perpendicular lines   parallelogram   quadrilateral   parallel lines   Half-n-half Clue   3. paralelogramo   edge   polygon   prism   parallelogram   Half-n-half Clue   4. línea recta   ellipse   prism   concave   straight line   Half-n-half Clue   5. borde   parallel lines   straight line   edge   vertex   Half-n-half Clue   6. pirámide   plane   pyramid   quadrilateral   hexagon   Half-n-half Clue   7. heptágono   straight line   parallel lines   ellipse   heptagon   Half-n-half Clue