1. raggio   pyramid   parallel lines   ray   convex   Hint Half-n-half Clue   2. piramide   segment   plane   vertex   pyramid   Half-n-half Clue   3. losanga   rhombus   concave   convex   segment   Half-n-half Clue   4. linee parallele   plane   ray   polygon   parallel lines   Half-n-half Clue   5. quadrilateral   pentagon   quadrilateral   convex   rhombus   Half-n-half Clue   6. parallelogramma   edge   straight line   pyramid   parallelogram   Half-n-half Clue   7. linea retta   vertex   straight line   parallel lines   prism   Half-n-half Clue