In quadrilateral A B C D, angles A, B, C, D form an increasing arithmetic sequence. Also, \angle A C B=90^{\circ}. If C D=14 and the length of the altitude from C to A B is 9, compute the area of A B C D.
In quadrilateral A B C D, angles A, B, C, D form an increasing arithmetic sequence. Also, \angle A C B=90^{\circ}. If C D=14 and the length of the altitude from C to A B is 9, compute the area of A B C D.