解出问题---Okay, here is the extraction of content from the image. **Problem Number:** 24 **Problem Statement:** As shown in Figure 1, in a planar rectangular coordinate system, the coordinates of points A and B are A (a, 0) and B (n, 0), and a, n satisfy |a+2| + √(5-n) = 0. Points A and B are simultaneously translated upwards by 4 units, then translated to the right by 3 units, respectively obtaining the corresponding points C and D. Connect AC, BD, CD. **(1) Question:** Find the coordinates of points C, D, and the area of quadrilateral OBDC. **(2) Question:** As shown in Figure 2, if point P is a moving point on line segment BD, connect PC, PO. When point P moves on BD (not coinciding with B, D), does the value of (∠DCP + ∠BOP) / ∠CPO change? Explain the reason. **(3) Question:** In quadrilateral OBDC, does there exist a point P, connect PO, PB, PC, PD, such that Area(△PCD) = Area(△PBD); Area(△POB) = Area(△POC) = 1? If such a point exists, find the coordinates of point P. If it does not exist, explain the reason. **Mathematical Formulas/Equations:** |a+2| + √(5-n) = 0 Area(△PCD) = Area(△PBD) Area(△POB) = 1 Area(△POC) = 1 **Charts/Diagrams:** **Figure 1 (图1):** * **Type:** Coordinate system diagram. * **Main Elements:** * Coordinate Axes: X-axis (labeled x), Y-axis (labeled y), Origin (labeled O). * Points: A and B are on the x-axis. A is to the left of O. B is to the right of O. C and D are in the first quadrant. C is above A and to the right of A. D is above B and to the right of B. * Lines: Straight line segment AC connects A and C. Straight line segment BD connects B and D. Straight line segment CD connects C and D. Straight line segment OB is the part of the x-axis from O to B. Straight line segment OC connects O and C. * Shapes: Quadrilateral OBDC is formed by points O, B, D, C. **Figure 2 (图2):** * **Type:** Coordinate system diagram showing a moving point. * **Main Elements:** * Coordinate Axes: X-axis (labeled x), Y-axis (labeled y), Origin (labeled O). * Points: A and B are on the x-axis. O is the origin. C and D are in the first quadrant. P is a point on the line segment BD. * Lines: Straight line segment AC connects A and C. Straight line segment BD connects B and D. Straight line segment CD connects C and D. Straight line segment OB is the part of the x-axis from O to B. Straight line segment OC connects O and C. Straight line segment PC connects P and C. Straight line segment PO connects P and O. * Shapes: Quadrilateral OBDC is formed by points O, B, D, C. Triangle PCD, Triangle PBD, Triangle POB, Triangle POC.