How many triangles are there in the figure ?

The number of triangles in the given figure is:

Trick = 1+ 2+ 3+ 4 = 10 

 for small trianle , total numbers of triangle is 10 

Similarly for large trianle (ABC)  , total numbers of triangle is 10 . 

  SO, The number of triangles in the given figure is:   10 + 10 = 20