Line Question: Line with more than 2 Points.

Is it possible to create a line (Perfectly straight), with say 3 points?
Below I have an image I made in… paint… hopefully it gets the point across.
I was also wondering how to select three points and make a plane with them (as noted in yellow in the image)

I apologize about the image … in general…

First… a bit of a terminology primer:

  • point - vertex
  • line - edge
  • plane - face

Yes, you can create additional vertices on an edge. You can do so by selecting the edge and subdividing it. Afterwards, you can do a vertex slide to position your new vertex along the edge as you desire.

You can make a face with three vertices by selecting the vertices and pressing the hotkey F.