Diagonals

For this exercise I have attempted to show diagonals in different ways as discussed in the course notes. The stairs, a true diagonal. The roof construction at Kings Cross station. This image also has the people exiting in a diagonal line.
The street view using perspective to create a diagonal.
Then the final image of the building I have tilted the camera to create the diagonal.  this image could equally have demonstrated diagonals by using perspective. However as already stated I was trying to show my understanding of diagonals by having something different in each image.

I have drawn lines to show the diagonals but they are difficult to see.