1. The problem is to construct a rectangle ABCD. 2. A rectangle is a quadrilateral with four right angles and opposite sides equal in length. 3. To construct rectangle ABCD, follow these steps: 4. Draw a line segment AB of any length. 5. At point A, construct a perpendicular line to AB. 6. On this perpendicular line, mark point D such that AD equals the desired width of the rectangle. 7. From point B, construct a perpendicular line to AB. 8. On this perpendicular line, mark point C such that BC equals AD. 9. Connect points C and D to complete the rectangle ABCD. 10. Verify that all angles are right angles and opposite sides are equal to confirm the figure is a rectangle.