I try to rectangle on ceiling of the model but i can't in x and y-axis

i try to put rectangle on ceiling but I can’t why

and also, sometime ( line or crv ) also behave like that why

There is a command called 3pt rectangle. That might help. You could also Loft between two edges. Do you have any Cplanes active besides default? —-Mark

yes i guess

good idea

but

but y this happens someone explain and send video if u have good time guys

markintheozarks

I feel like you are just starting with Rhino. Have you seen the Free training content on the McNeel website?

ya but if u have solution, then u can tell that would be helpful

and i used more than 100 days learn still upto take render

but i have some question in mind to not clear thatsy I’m here i know by another way to doit

but i wish to learn fully with understanding

Rectangular Plane by 3 points command?

Yes you will find help on the forum

the question when i use rectangle crv

and need to place the rectangle crv on ceiling (i know we can use srf option commands)

why i can’t do that

but line crv can fit into x axis and y axis and z axis

rectangfle.3dm (79.4 KB)

The Little Triangle in the corner opens more options for the rectangle tools

Screenshot 2026-11-03 163238

I am just about to log off my work computer for the day (uk time). So I hope others can jump on this chat

CPlane command - set it to the ceiling level. then draw the rectangle

EDIT: I think the CPlane (Construction Plane) is like a piece of paper. To draw a circle you need a 2D flat piece of paper to draw on. You can move the CPlane around but World Origin stays the same.

EDIT 2: Google AI says “Restoring defaults: You can reset the CPlane back to standard orientations (such as World Top, Front, or Right) at any time using the CPlane command with the World option”