RULE OF THIRDS
In Photography as in Art, Composition, and Balance are a part of the overall image components.
There is a guide line that is taught in all art or photography classes.
The guide is a compositional component to help us place important elements of the image in places that give an image a pleasing balance and draw your attention to the main component.
Here is a diagram of the “Rule of Thirds” The places where the lines intersect is where you want to place a “Center of Interest” point.
For Street Photography, this “Guide Line” can be very helpful in composing candid photos. It can add balance and help direct your eye to the subject(s) and help keep the theme (or) feeling) of the photograph.
Some examples of this guide in real time usage