Is there a way to make a flat plane perpendicular

Rhino
1

To a curve? I see there is make rectangle around curve. I can make a planer surface from the rectangle which is one more click . That does it for me, unless I’m missing something.Thank you, Mark

2

Yes, you can use Cplane Perpendicular to Curve and then draw the shape on that plane.

I use Rectangle center from there.

3

Thanks Scott, that will work for me too.—-Mark