# Plot Multiple 3D Graphs that overlap

Hello,

I can graph multiple 3D graphs by adding them together but I can not get them to overlap the way I want. I would like to be able to flip the axis. As an example, I would like to be able to graph the height of the cylindrical_plot3d along the x or y axes in addition to the z axes. Same for the 3d parabola.

```
var('y,z')
theta,y=var('theta,y')#start was z
cylindrical_plot3d(10,(theta,0,2*pi),(y,-2,2)) + plot3d(x^2, (-1,1),(-1,1))
```

Thanks in advance!

Try

`sage: parametric_plot3d?`