How many triangles, are there in the given figure?

20

The logic followed here is;

(let's keep in mind the base, means how many triangles are there in the base)

1+2= 03  (LMO) 

1+2= 03  (LNO)

And, the other triangles are;

FST, EUS,HVU, GTV, SML, TNL,VON, UMO, AEF, BGF, DHG, CEH, LMN, ONM

Therefore, the total number of triangles in the above figure are 03+03+14= 20 triangles..