1. rebord   parallel lines   edge   quadrangle   prism   Hint Half-n-half Clue   2. lignes perpendiculaires   concave   perpendicular lines   hemisphere   pyramid   Half-n-half Clue   3. plat   pentagon   edge   ellipse   plane   Half-n-half Clue   4. concave   edge   quadrilateral   vertex   concave   Half-n-half Clue   5. segment   hexagon   concave   segment   hemisphere   Half-n-half Clue   6. quadrilatère   polygon   parallelogram   straight line   quadrangle   Half-n-half Clue   7. pyramide   rhombus   pyramid   heptagon   pentagon   Half-n-half Clue