How to make a triangle selection?

[nyctophiIe]

I'm quite new to paint.net but I know the basics yet I cant make a selection of material in a right triangle shape.

 

For example lets say i had a picture but I wanted to select a piece of that picture but in a triangle and be able to move it;

How would I do that, if possible?

 

 

( imagine the red rectangle a triangle )

[toe_head2001]

Oh, you mean like this?

 

1) Use the Rectangle Select ( ) tool to draw a selection

2) Use the Move Selection ( ) tool to rotate the selection 45 degrees

3) Use the Rectangle Select ( ) on Subtraction mode to remove half of the selection

4) Use the Move Selection ( ) tool to rotate the selection -45 degrees

Edited November 19, 2015 by toe_head2001

[nyctophiIe]

Thank you very much! 

[jim100361]

Another method is to use an image of a triangle on a separate layer, use the magic wand to make the selection, then with it selected, switch to the other layer you want to use it on.

[Ego Eram Reputo]

Subtraction mode can be enabled from the icons in the Tool Bar when the selection tool is active, or by using  Alt + Left Mouse Button.

[Seerose]

Very good and easy to follow and apply. Thank you to all.