In every photograph, there are certain parts of the subject that are not visible. That is obvious, as each photograph can only be taken from one position. Whatever cannot be seen from that particular position will be absent from the photograph. To capture these omitted things, the photographer needs to change his point-of-view. Shots from different angles help photographers capture different aspects of the subject.
In the gallery below, there are pairs of photographs of different subjects taken from different angles. The photographs, though of the same thing, have aspects that make each one unique.