Colour the triangles in the picture to show 1 4

We need to shade 1 portion out of 4 portions. By observing the given figure 1 st and 3 rd portion is a rhombus, and it is equally divided into 4 triangles. So, out of 4 parts we need to shade the one part. That is, In the 2 nd and 4 th portion of the given figure 4 triangles are placed in a such way that they are mirror images of two triangles. So out of 4 parts we need to shade the one part. That is, The complete figure looks likes this. Hence, the required answer is shown above.