Thanks Frenchy for your dedication to the cause! However I think it was really the principle I was addressing not specifically solely the triangle shape but a method that could be used that with any shape (like the tank tread example) that just used two end points in a straight line to determin the start and end of each segment. But good thinking outside the box!!

Michael- yup i think you have understood me on my snapping point. Here is a better example - I just want to snap the end point of the line to the implied intersection between the radius of the base point of the line and the curve im intersecting to. Currently point will just slide up and down the curve which is useful in many cases but would be good to also have this intersection snap too. I think a picture is definately worth a 1000 words in this case!.....









Re the straight line snap I can see the dificulty in determining the exact measurements for the implied circular intersections for an even split but i guess it would be easier for a purely fixed size measurement, that would save a fair bit of manual placing and rotating.