1. Kante   hexagon   parallel lines   edge   perpendicular lines   Hint Half-n-half Clue   2. Rhombus   convex   perpendicular lines   heptagon   rhombus   Half-n-half Clue   3. gerade Gerade   straight line   ray   convex   oval   Half-n-half Clue   4. Parallelogramm   parallelogram   ray   hexagon   plane   Half-n-half Clue   5. flach   heptagon   vertex   plane   segment   Half-n-half Clue   6. Konkav   concave   perpendicular lines   segment   parallel lines   Half-n-half Clue   7. Vieleck   rhombus   polygon   ray   concave   Half-n-half Clue