1. Parallelogramm   polygon   pyramid   straight line   parallelogram   Hint Half-n-half Clue   2. Pentagon   polygon   pentagon   oval   plane   Half-n-half Clue   3. Hexagon   convex   hexagon   pyramid   straight line   Half-n-half Clue   4. oval   rhombus   ellipse   prism   oval   Half-n-half Clue   5. Prisma   prism   ellipse   concave   quadrangle   Half-n-half Clue   6. Segment   pentagon   polygon   heptagon   segment   Half-n-half Clue   7. gerade Gerade   straight line   convex   plane   parallel lines   Half-n-half Clue