1. Pentagon   concave   pentagon   parallel lines   plane   Hint Half-n-half Clue   2. Konkav   edge   concave   ray   polygon   Half-n-half Clue   3. heptágono   polygon   convex   heptagon   pyramid   Half-n-half Clue   4. Prisma   oval   quadrangle   prism   convex   Half-n-half Clue   5. Hexagon   pyramid   parallelogram   plane   hexagon   Half-n-half Clue   6. Viereck   pentagon   vertex   quadrilateral   parallelogram   Half-n-half Clue   7. Parallelogramm   parallelogram   segment   ray   heptagon   Half-n-half Clue