How many triangles are there in the given figure?

22 20 19 21

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  (AOF)  1+2= 03  (ACD) 1+2= 03  (ECD) And, the other triangles are; ACE, ABE, ADB, EOD, CPF, ACF, AFE, ACP, APD, ADE, COF Therefore, there are 03+03+03+11= 20 triangles in the above figure.