<image>Given that the diagonals of quadrilateral ABCD intersect at point O, if a point is arbitrarily chosen on the segment BD (without coinciding with points B, O, or D) and connected with A and C, as shown in Figure 1, then the number of triangles formed is 15; if two points are arbitrarily chosen on the segment BD (without coinciding with points B, O, or D) as shown in Figure 2, then the number of triangles formed is 24; if three points are arbitrarily chosen on the segment BD (without coinciding with points B, O, or D) as shown in Figure 3, then the number of triangles formed is 35... Following this pattern, the number of triangles in Figure 5 is ____.
