1. pentágono   rhombus   pentagon   parallel lines   segment   Hint Half-n-half Clue   2. reta, linha reta   segment   oval   straight line   hexagon   Half-n-half Clue   3. vértice   quadrilateral   pyramid   vertex   segment   Half-n-half Clue   4. côncavo   ellipse   straight line   convex   concave   Half-n-half Clue   5. convexo   quadrilateral   straight line   convex   plane   Half-n-half Clue   6. elipse   convex   concave   perpendicular lines   ellipse   Half-n-half Clue   7. paralelogramo   plane   hexagon   parallelogram   prism   Half-n-half Clue