1. Gipfel   parallelogram   ellipse   vertex   polygon   Hint Half-n-half Clue   2. Rhombus   prism   quadrangle   edge   rhombus   Half-n-half Clue   3. Viereck   pentagon   quadrilateral   polygon   segment   Half-n-half Clue   4. Prisma   perpendicular lines   prism   parallel lines   polygon   Half-n-half Clue   5. Senkrechtlinien   quadrilateral   perpendicular lines   parallel lines   straight line   Half-n-half Clue   6. Segment   hexagon   segment   hemisphere   convex   Half-n-half Clue   7. heptágono   segment   hemisphere   convex   heptagon   Half-n-half Clue