1. losanga   rhombus   perpendicular lines   ellipse   parallel lines   Hint Half-n-half Clue   2. vertice   vertex   polygon   edge   concave   Half-n-half Clue   3. piramide   pyramid   convex   perpendicular lines   quadrilateral   Half-n-half Clue   4. parallelogramma   oval   ray   parallelogram   parallel lines   Half-n-half Clue   5. prisma   parallel lines   prism   ellipse   vertex   Half-n-half Clue   6. raggio   pentagon   ray   parallel lines   ellipse   Half-n-half Clue   7. concavo   quadrangle   concave   oval   hexagon   Half-n-half Clue