How many triangles of any size are there in the figure Expla

How many triangles (of any size) are there in the figure?

Explain how you got your answer.

Solution

There are 13 trianlges,

Level 1 triangles = 7 {formed with 3 lines with no lines between them}

Level-2 trianlges = 4 {formed with 4 lines}

Level-3 triangles = 2 {formed with 5 lines}