How many triangles are there in the given figure?

10 20 8 18

8

The logic followed here is; (let's keep in mind the base, means how many triangles are there in the base) 1+2= 03  (ACB)  1+2= 03  (DCB) And, the other triangles are; ADB & ADC Therefore, the total number of triangles in the above figure are 03+03+02= 08 triangles..