1. poligono   pyramid   polygon   hemisphere   plane   Hint Half-n-half Clue   2. prisma   prism   ray   polygon   parallelogram   Half-n-half Clue   3. piramide   pyramid   quadrangle   ellipse   perpendicular lines   Half-n-half Clue   4. konvex   polygon   vertex   rhombus   convex   Half-n-half Clue   5. linee perpendicolari   quadrangle   edge   hemisphere   perpendicular lines   Half-n-half Clue   6. parallelogramma   parallelogram   oval   segment   polygon   Half-n-half Clue   7. vertice   vertex   parallel lines   straight line   perpendicular lines   Half-n-half Clue