Thanks again to RandyV for going to the trouble to make drawings to explain our ideas.  I re-drew them for the web.  Scroll down for the drawings

You must establish the first and last angled stall and their angle. To make the angle, you must create a straight line on a tangent from the point of the front left edge of the left most stall and the front right edge of the right most stall. These are shown as TANGENT A & TANGENT B.

Lay out the first stall outside edge on the angle called for with respect to the tangent of its front corner. This is shown as stall edges C-A and D-B (these are often a curb).

Pull line C-A to the length called for (for a car parking stall, probably 20’ – 22’).

Measure the arc length shown as DIMENSION A-B and divide by the number of stalls to be created. Answer of division will be length X shown in drawing.

Measure along curb distance X and put layout marks at every multiple of X.

Measure out perpendicular from curb and mark approximately every 25’ then pull layout tape along the arc created by these marks.  Measure this distance as DIMENSION C-D.

Measure the arc length shown as DIMENSION C-D and divide by the number of stalls to be created. Answer of division will be length Y shown in drawing.

Measure along layout tape the distance of Y and put layout marks at every multiple of Y starting with the first stall edge C-A and ending with D-B.

Now simply connect the dots of your layout marks for painting the stall lines.