1. reta, linha reta   hexagon   straight line   perpendicular lines   parallel lines   Hint Half-n-half Clue   2. vértice   pyramid   polygon   vertex   parallel lines   Half-n-half Clue   3. convexo   convex   vertex   rhombus   prism   Half-n-half Clue   4. retas paralelas   segment   parallel lines   quadrangle   pentagon   Half-n-half Clue   5. côncavo   concave   hexagon   perpendicular lines   edge   Half-n-half Clue   6. hemisfério   quadrangle   hemisphere   oval   pyramid   Half-n-half Clue   7. paralelogramo   pyramid   parallelogram   edge   ellipse   Half-n-half Clue