1. oval   hemisphere   edge   quadrilateral   oval   Hint Half-n-half Clue   2. Segment   prism   segment   oval   quadrangle   Half-n-half Clue   3. Konkav   pentagon   concave   quadrangle   hemisphere   Half-n-half Clue   4. Prisma   prism   plane   convex   polygon   Half-n-half Clue   5. parallele Linien   ellipse   parallel lines   polygon   quadrangle   Half-n-half Clue   6. flach   ellipse   ray   polygon   plane   Half-n-half Clue   7. Viereck   polygon   pentagon   quadrilateral   convex   Half-n-half Clue