1. oval   ray   plane   oval   parallel lines   Hint Half-n-half Clue   2. segmento   quadrilateral   edge   convex   segment   Half-n-half Clue   3. borda   polygon   edge   concave   plane   Half-n-half Clue   4. convexo   pentagon   convex   parallel lines   ray   Half-n-half Clue   5. polígono   pyramid   ray   rhombus   polygon   Half-n-half Clue   6. côncavo   concave   plane   edge   parallel lines   Half-n-half Clue   7. losango, rombo   rhombus   polygon   straight line   edge   Half-n-half Clue