1. losanga   edge   hexagon   parallel lines   rhombus   Hint Half-n-half Clue   2. linea retta   pyramid   straight line   ray   quadrilateral   Half-n-half Clue   3. raggio   hemisphere   vertex   straight line   ray   Half-n-half Clue   4. ellisse   parallel lines   pentagon   vertex   ellipse   Half-n-half Clue   5. linee perpendicolari   pyramid   parallelogram   perpendicular lines   quadrilateral   Half-n-half Clue   6. linee parallele   plane   hexagon   quadrilateral   parallel lines   Half-n-half Clue   7. ovale   hexagon   plane   oval   rhombus   Half-n-half Clue