This power point presentation discusses a diagram with points labeled A, B, C, etc. and lines connecting the points. It explains how to identify the relationships between the points based on the connections. Specifically, it analyzes the connections between points F, E, B, D, and C. It determines that F, C, B, E, and A, D are the lines of relationships. It concludes that the point determined by the intersection of these lines of relationships is the central point of the diagram.