1. prisme   quadrangle   parallelogram   edge   prism   Hint Half-n-half Clue   2. plat   plane   quadrangle   pentagon   perpendicular lines   Half-n-half Clue   3. segment   edge   concave   heptagon   segment   Half-n-half Clue   4. hémisphère   hemisphere   polygon   pyramid   oval   Half-n-half Clue   5. polygone   hexagon   plane   polygon   ellipse   Half-n-half Clue   6. concave   concave   pyramid   perpendicular lines   heptagon   Half-n-half Clue   7. pyramide   rhombus   heptagon   pyramid   parallelogram   Half-n-half Clue