Taking angle measurements is easy in SOLIDWORKS, select one face, hold CNTL then select the other face. This will measure the outside angle. Suppose you want to measure the complementary angle, or the inside angle instead. Rather than pulling out a calculator, there's an easy trick to measure this complementary angle. Check out this video to reveal how to quickly measure this angle. The same concept applies to the measure tool. Additionally, if you have dimensions that you want to keep track of for reference purposes but don't have any in the existing sketches or features that you can look at to report these numbers, there is a way to do that by converting parts of your sketch to entities.