1. First, in the open cad software, enter SC and space at the command line, as shown in the following figure.
2. Then select the object and space to be reduced, as shown in the figure below.
3. Then specify the base point of the reduced graph, as shown in the figure below.
4. Then specify a scale factor of 0.5 with spaces, as shown in the figure below.
5. At this time, you can see that the figure has been reduced, as shown in the figure below, and the reduction is completed.