Here's an explanation without pictures.
http://www.ehow.com/how_8375414_cut-hexagons-quilt.html
You cut a strip with size you want the hexagon, fold the strip in half, use a triangle ruler, etc.
Here's one using Kaye Woods StarMaker ruler.
http://www.kayewood.com/tips/hexagons.pdf
Maybe you have a triangle ruler or can make a sturdy template for the triangle.