1. líneas paralelas   parallel lines   polygon   vertex   convex   Hint Half-n-half Clue   2. rayo   heptagon   plane   ray   pentagon   Half-n-half Clue   3. heptágono   polygon   quadrilateral   heptagon   ellipse   Half-n-half Clue   4. cuadrilátero   perpendicular lines   ray   plane   quadrilateral   Half-n-half Clue   5. prisma   hexagon   pyramid   concave   prism   Half-n-half Clue   6. segmento   pentagon   segment   polygon   convex   Half-n-half Clue   7. hexágono   hexagon   vertex   ellipse   ray   Half-n-half Clue