1. piramide   convex   edge   pyramid   plane   Hint Half-n-half Clue   2. quadrilateral   ellipse   parallel lines   rhombus   quadrilateral   Half-n-half Clue   3. piano   parallelogram   ray   plane   straight line   Half-n-half Clue   4. vertice   rhombus   vertex   quadrilateral   pentagon   Half-n-half Clue   5. prisma   polygon   prism   concave   pyramid   Half-n-half Clue   6. segmento   vertex   pentagon   segment   perpendicular lines   Half-n-half Clue   7. losanga   pyramid   edge   rhombus   perpendicular lines   Half-n-half Clue