1. segmento   polygon   prism   segment   edge   Hint Half-n-half Clue   2. piano   pentagon   plane   prism   straight line   Half-n-half Clue   3. piramide   pyramid   parallelogram   quadrilateral   ray   Half-n-half Clue   4. emisfero   parallel lines   pentagon   hemisphere   hexagon   Half-n-half Clue   5. concavo   ray   convex   vertex   concave   Half-n-half Clue   6. esagono   polygon   rhombus   parallelogram   hexagon   Half-n-half Clue   7. ellisse   parallelogram   ellipse   rhombus   quadrangle   Half-n-half Clue