Derek,

Your advanced wisdom is appreciated and endlessly valuable to me.

I probably shouldn't be responding, because I'm an "intermediate newbie" so, I certainly don't qualify as having advanced wisdom---but,
sometimes the "simple way" works for me until I grasp the "devine wisdom." I'm not good at paths yet either.

If I'm understanding you correctly---(I didn't know what you meant by "isometric triangles" --I think you mean "isosceles triangles" meaning having two sides of the same dimension)---if I'm wrong, probably disregard my info.

1. Open your rectangle image as a seperate document from your "canvas" that you are creating your artwork.

2. Duplicate your rectangle image layer as insurance in case you screw up. Turn off the eye on the original and work with the duplicate layer.

3. Use the polygon lasso tool and click the "points" of your triangle. When you are back to your starting point, you will see a small circle that indicates "closure"--click and you will have your triangle selected.

4. Go to "Select">save selection and name it left triangle. With your selection still active, create a new layer and use the paint bucket to fill the selected triangle with any color. (That way you can see your selection.)

5. Go back to your working layer of your rectangle image and repeat above steps to create your second triangle following the boundaries of your "colored triangle".(name this selection right triangle)

6. Now go back to your working rectangle and choose "Select">load selection and choose the left triangle. This will result in your triangle being selected on your image---now choose the move tool and move it to your final canvas.

7. Repeat with right triangle.

Hope this works for you. I probably made it sound more complicated than it is---or I could have missed your whole concept---but, I tried.

The "smart people" will have a better way, no doubt.

Patty

Derek W Brown

Replied in the following topics

Geometric Design\Problems With Paths and Cliping Paths