Repeater Line and rotation

Draw a vertical line with the pen tool to create Shape 1

Add a repeater to Shape 1 and set copies to 2, position to 0,0, and rotation to about 33º to give you one of the points of your star. 

Select Contents/Shape 1, right-click and Group the shapes.

Add a second repeater to Group 1, set copies to 5, position to 0,0, rotation to 72º (360/5), and then adjust the Transform Group 1 position and anchor point to give you a completed star. 

The finished comp looks something like this:

You just need to zero out the X position within the Repeater. The Repeater Transform defaults to a Position of 100,0, probably so you can actually see the copies it creates. 

If this is a hand-drawn path, you may also need to tweak the Anchor Point (again, within the Repeater's Transform properties) to get the look you're after. Shape layers have multiple internal opportunities to transform the different elements you can place inside them, which gives a lot of power, but can be a little unintuitive until you wrap your head around it. 

Keep on tweaking the transform properties of the rectangle and the Repeater. That's one of those obscure things that's hard to grasp. The values sometimes interact in odd ways. Otherwise consider another level of grouping to isolate the transforms and push the anchor point off the rectangle until your "center" is where you want it to be.

Mylenium