We can see that there is square that is divided into 4 parts.Â
Each part is divided into two triangles.Â
Hence the square is made up of 8 triangles, as labelled below
Now if observe Triangle number 2 and 7 can also form a triangle
Similarly triangle numbers 2 and 3, 3 and 6 and 6 and 7 can also form a triangle.Â
Hence total number of triangles = 8+4 = 12
Create a FREE account and get: