1. Hemisphäre   quadrangle   oval   hemisphere   quadrilateral   Hint Half-n-half Clue   2. Konvex   polygon   vertex   convex   rhombus   Half-n-half Clue   3. Ellipse   oval   ellipse   quadrangle   rhombus   Half-n-half Clue   4. Senkrechtlinien   perpendicular lines   parallel lines   hemisphere   rhombus   Half-n-half Clue   5. heptágono   ray   polygon   pyramid   heptagon   Half-n-half Clue   6. Pyramide   vertex   quadrangle   prism   pyramid   Half-n-half Clue   7. Kante   edge   ray   convex   parallelogram   Half-n-half Clue