Create a line perpendicular to the plane at the point on that plane

Grasshopper
1

How to Create a line perpendicular to the plane at the point on that plane?
Which code I can create?
Thank you!

2

Line SDL component. Start point = point on plane, Direction = planes z axis (get that from deconstruct plane). Length = desired length of line.

3

thank you.
But that is inclined plane

4

Your question is a bit vague to me…
For the direction that Michael Pryor said, use the normal of the plane you’re talking about. Wich will be the Z output of the “deconstruct plane” component.

Is it better?