How to have 2 shapes at opposite sides with the same distance from each side of the canvas?

[HeyoThere]

Let's say I want to have a shape at one side of the canvas 60 px height and weidht and another one at the exact same distance but at the opposite side of the canvas. The way I know how to do this is by using rulers, I was thinking there might be an easier way to align stuff equaly through the canvas, if there is, can someone please tell me, I accept video tutorial, I tried googling it but I didn't find anything that answered my exact question.

[Semaphoric]

If you have two Shape layers, you could select each with the Move too, and use the three dot menu in the options:

With Align To set to Canvas, you could left-justify one, and right-justify the other. Free Transform the left hand one, setting the reference point to the left edge, and entering your desired space in the X field.

For the right hand one do similarly with the reference point set to the right edge, with Relative Positioning turned on, and enter minus sign + desired space in the X field.

[HeyoThere]

This is exactly what I was looking for, thank you. On this note, do you if it's possible to create a New Guide with negative values? I tried and it didn't work, but I was thinking if there's a quicker way to do it rather than doing math