1. parallelogramma   quadrangle   parallelogram   quadrilateral   perpendicular lines   Hint Half-n-half Clue   2. pentagono   quadrangle   pentagon   parallel lines   plane   Half-n-half Clue   3. quadrangolo   ray   quadrangle   ellipse   rhombus   Half-n-half Clue   4. piramide   parallel lines   vertex   pyramid   ellipse   Half-n-half Clue   5. losanga   hexagon   straight line   rhombus   prism   Half-n-half Clue   6. poligono   segment   rhombus   polygon   convex   Half-n-half Clue   7. raggio   pentagon   straight line   prism   ray   Half-n-half Clue