The different triangles in the given figure are FGK, IJM, FLH, JLH, FJL, TSR, NOP, TEQ, OEQ, TEO, EGH, EIH, EGI, EKL, EML, CES, DEN, CUE, DUE, CUD, RQU, PQU, RPU, ESU, ENU
$$\therefore\ $$The number of triangles in the given figure = 25
Hence, the correct answer is Option D
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