Offseting Single line

[moreha]

If we have a single line not a Polyline or Circle etc, how can we make an offset from that single line using offset tool?

I know that it's possible to draw a new line using offset constraint but would like to know if it's possible to make an offset of a single line through the Offset Tool itself! Because as far as I know, we can make a new offset by dragging polylines, circles, arcs, etc using the pet-pallet or using the offset tool!

[moreha]

Dear David Shorter,

First of all thank you for your kind reply, but I meant offsetting a single line not Polylines!

[David Shorter]

Same thing, the illustration was not a polyline