1. polígono   parallel lines   straight line   polygon   segment   Hint Half-n-half Clue   2. óvalo   oval   plane   hemisphere   edge   Half-n-half Clue   3. prisma   ray   plane   prism   heptagon   Half-n-half Clue   4. cóncavo   hemisphere   prism   concave   parallel lines   Half-n-half Clue   5. plano   concave   plane   ray   ellipse   Half-n-half Clue   6. cuadrilátero   oval   heptagon   quadrangle   convex   Half-n-half Clue   7. paralelogramo   parallelogram   parallel lines   straight line   prism   Half-n-half Clue