1. Hemisphäre   segment   ellipse   prism   hemisphere   Hint Half-n-half Clue   2. parallele Linien   convex   rhombus   parallel lines   ellipse   Half-n-half Clue   3. Rhombus   segment   rhombus   heptagon   plane   Half-n-half Clue   4. Parallelogramm   segment   parallelogram   pentagon   perpendicular lines   Half-n-half Clue   5. Pentagon   pentagon   vertex   segment   quadrangle   Half-n-half Clue   6. Segment   segment   parallel lines   perpendicular lines   concave   Half-n-half Clue   7. heptágono   heptagon   convex   quadrangle   edge   Half-n-half Clue