How many triangles are there in the given figure?

The logic followed here is;

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

1+2= 03  (AOC) 

1+2= 03  (BOD)

1+2= 03  (ACB)

And, the other triangles are;

BNM, AOB, ACB, ABD, DNB, CNA, ALN, BNM, ANE, AMB, ALB

Therefore, there are 03+03+03+11= 20 triangles in the above figure.