1. losange   heptagon   rhombus   oval   concave   Hint Half-n-half Clue   2. ligne droite   straight line   parallelogram   pentagon   vertex   Half-n-half Clue   3. ellipse   edge   ellipse   hexagon   concave   Half-n-half Clue   4. hexagone   quadrangle   oval   hexagon   hemisphere   Half-n-half Clue   5. hémisphère   prism   parallel lines   hemisphere   convex   Half-n-half Clue   6. parallélogramme   parallel lines   parallelogram   concave   heptagon   Half-n-half Clue   7. rayon   ray   heptagon   oval   pyramid   Half-n-half Clue