1. bordo   perpendicular lines   hexagon   straight line   edge   Hint Half-n-half Clue   2. quadrangolo   convex   hexagon   quadrangle   parallelogram   Half-n-half Clue   3. vertice   convex   segment   rhombus   vertex   Half-n-half Clue   4. prisma   parallelogram   parallel lines   oval   prism   Half-n-half Clue   5. segmento   concave   quadrilateral   oval   segment   Half-n-half Clue   6. linea retta   oval   segment   polygon   straight line   Half-n-half Clue   7. ovale   ellipse   oval   ray   rhombus   Half-n-half Clue