1. First, we enter the view manager through the command v.

2. Enter the southwest isometric view by selecting the preset view-Southwest isometric edge measurement-Set as current-Apply-OK.

3. After entering, we found that the Z-axis was added on the premise that the X-axis and Y-axis existed, that is to say, the three-dimensional view included three axes of xyz.

4. Then we draw a rectangle (rec) in the three views.

5. Set the height of the rectangle by the command ext, and set the height of the rectangle by entering the command-Select Graphics-Enter or dragging directly.

6. Similarly, you can set the height of a circle, a polygon, etc. Just draw a floor plan and set a height, and observe the results in three views. Then we can draw a wall and draw it through the plug-in command hzqt.

7. After setting the height, the result shown below will appear. This completes the three views.