How can dimensions of a sketch be defined in SolidWorks?

The Smart Dimension tool in the Sketch toolbar is specifically designed for defining dimensions in SolidWorks sketches. It allows users to apply and control the dimensions of sketch entities efficiently. By selecting the Smart Dimension option, you can click on lines, points, or arcs, and then specify the distance or angle, which will automatically create a dimension and display it on the sketch.

This tool is particularly powerful because it not only helps to define the size and relationships of sketch entities but also provides a user-friendly experience by allowing you to interactively set dimensions. Once dimensions are created using the Smart Dimension tool, they can be adjusted or modified as needed, further enhancing the flexibility of the sketching process.

Other methods like manually entering values or editing properties of the sketch are not the primary or most common ways to define dimensions within a sketch environment. They may serve specific purposes but lack the efficiency and ease of use that the Smart Dimension tool offers for standard dimensioning tasks in SolidWorks.