1. polygone   parallelogram   oval   polygon   plane   Hint Half-n-half Clue   2. segment   hexagon   segment   plane   ellipse   Half-n-half Clue   3. parallélogramme   parallelogram   prism   edge   pentagon   Half-n-half Clue   4. hémisphère   heptagon   oval   concave   hemisphere   Half-n-half Clue   5. lignes parallèles   quadrilateral   perpendicular lines   parallel lines   convex   Half-n-half Clue   6. prisme   prism   pentagon   polygon   straight line   Half-n-half Clue   7. sommet   oval   vertex   quadrilateral   plane   Half-n-half Clue