How many triangles are there in the given figure?

20 24 22 18

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  (ARB)  1+2= 03  (LRM) 1+2= 03  (NRO)  1+2= 03  (PRO) 1+2= 03  (SVD)  And, the other triangles are; DVT, ABD, ACD BRD, SDT Therefore, there are 03+03+03+03+03+05= 20 triangles in the above figure.