1. वर्णक्रम, आयता   vertex   heptagon   prism   rhombus   Hint Half-n-half Clue   2. चौक   parallelogram   quadrangle   edge   perpendicular lines   Half-n-half Clue   3. तल, प्लेन   ray   plane   quadrilateral   hexagon   Half-n-half Clue   4. किनारा   edge   polygon   rhombus   segment   Half-n-half Clue   5. शीर्ष   quadrilateral   vertex   convex   perpendicular lines   Half-n-half Clue   6. उत्तल   quadrangle   pyramid   convex   oval   Half-n-half Clue   7. बहुभुज   pyramid   polygon   perpendicular lines   prism   Half-n-half Clue