# Rotate without distorting size

I'm trying to create a 45 degree angle on a specific sized rectangle. However, when I rotate my end vertices, the size of the rectangle also changes.

How can I rotate without changing the size of my object?

The object on the left is what I am trying to acomplish. The object on the right is what happens if I rotate the two vertices to a 45 degree angle.

• Hi, welcome. I can't understand what you mean, can you show a picture, a drawing or else to help us understanding what you need? Dec 4, 2016 at 20:01
• sorry, Is not clear Dec 4, 2016 at 20:14
• Sorry, I basically want to angle an end of a rectangle 45 degrees. But when I use the rotate ( R ) tool, with my selected vertices, the rotation makes the end smaller. I don't want my size to change, just the angle of the end of the rectangle. Hope that helps. Dec 4, 2016 at 20:14
• Use the shear tool. Dec 5, 2016 at 3:50

You obviously can't use rotate on vertex, since what you want to achieve is not rotation, it's closer to a cut.

Either use Knife Project with a secondary object. Create a plane, rotate it 45º and place it where desired. With still selected, enter Edit Mode in your rectangle and use Knife Project

If you rectangle as known dimensions you can simply move one vertex horizontally the same distance as its height.

• You might just hit K in edit mode, snap the cursor to one corner, klick once, press C to activate snap to angles and click again at the edge of the rectangle in an 45° angle. Angle snap will help to get the exact spot and no temporary geometry is needed. You need to view it straight from above to make it work as intended. Dec 5, 2016 at 12:23
• @Cebbi I tried had tried with the Knife but didn't know about that Angle Snap feature. C key did it, that is awesome! Should post that as a new answer bellow. Dec 5, 2016 at 17:18

The command you are looking for is called SHEAR. Select the vertices you want to rotate and press Space and type in "shear" (or ShiftCtrlAltS at the same time)

• Wow, this should be marked as answer, so instinctive except the name "shear". Oct 25, 2018 at 15:46
• Nevermind, this method is not as useful as I thought, but maybe It's 2.8 alpha's problem. Oct 25, 2018 at 15:55
• THANK YOU. seriously.
– Raku
Feb 19, 2021 at 13:27
• This bumps up my modelling game. Thank you kindly. Jan 7, 2022 at 23:21

Use the knife tool K and press C to activate angle snapping.