1. paralelogramo   pentagon   quadrilateral   vertex   parallelogram   Hint Half-n-half Clue   2. retas perpendiculares   concave   straight line   perpendicular lines   ray   Half-n-half Clue   3. pentágono   pentagon   hemisphere   quadrangle   quadrilateral   Half-n-half Clue   4. oval   rhombus   ray   pyramid   oval   Half-n-half Clue   5. hemisfério   concave   hemisphere   quadrilateral   rhombus   Half-n-half Clue   6. plano   plane   segment   concave   vertex   Half-n-half Clue   7. segmento   vertex   segment   perpendicular lines   quadrilateral   Half-n-half Clue