True or False: In a block diagram, parts are represented as either symbols or geometric shapes.

The statement that in a block diagram, parts are represented as either symbols or geometric shapes is true. Block diagrams are used to represent systems or processes in a simplified manner, making it easier to visualize the elements and their relationships. In these diagrams, different components—such as processes, inputs, outputs, or storage—can be illustrated using both standardized symbols (like rectangles for processes, arrows for flow directions, etc.) and geometric shapes (such as circles or other shapes that represent various functions or data).

This flexibility allows for a more effective communication of complex information by providing recognizable representations that can easily convey their intended meaning. The combination of symbols and geometric shapes enhances clarity, making it easier for the audience to understand the diagram at a glance. Thus, the correct interpretation of block diagrams supports the assertion that they incorporate both forms of representation.