In the above given figure (1), we see that the length of two sides `P' and `Q' when added then. it is less than the length of `R' because it violates the definition of triangle inequalities. A triangle is having equal sides, and the angle that is different to these sides is also same.
To enable Windows Update. Click Start, point to All Programs, and then click Windows Update. Click Change settings. In the Important updates section, select a mode of update that enables Windows Update (any selection other than Never Check for Updates), and then click OK. Click Start, and then click Run.
To disable Windows Update, here is what you should do: Download and run the Show or hide updates troubleshooter tool from the Microsoft Support page. Ensure that you click on Advanced link on the first page of the troubleshooter window and click to disable the option apply repairs automatically.