1. paralelogramo   parallelogram   parallel lines   segment   hemisphere   Hint Half-n-half Clue   2. pentágono   quadrilateral   pentagon   pyramid   segment   Half-n-half Clue   3. líneas perpendiculares   heptagon   polygon   perpendicular lines   rhombus   Half-n-half Clue   4. prisma   edge   pyramid   prism   rhombus   Half-n-half Clue   5. cuadrilátero   quadrangle   edge   plane   concave   Half-n-half Clue   6. cóncavo   rhombus   concave   segment   plane   Half-n-half Clue   7. rayo   hemisphere   straight line   concave   ray   Half-n-half Clue