How to draw a star, pentagon, hexagon, octagon and equilateral triangle.

Many times when drawing a plan for a project it is necessary to create a geometric shape. This page covers the four most common, a star, pentagon, hexigon, octagon and triangle. The angles to set a miter saw are also included with each figure.

Angles On Your Saw The
scales on your table saw and miter saw can be a bit confusing, this is
because they tell you how far from square or 90 degrees the cut is from
the edge of the board against the fence, not the actual angle you are
cutting. The zero mark tells you that there will be no variation, the
cut will be square. At 5 degrees the cut will be 5 degrees off square,
the actual angle measured with a protractor will be 95 or 85 depending
which side is measured. To calculate the angle to set your saw for a multisided item divide 180 by the number of sides and set your scale to that value. 
To Draw a StarDraw a circle with a compass that the required star will fit into, then draw perpendicular diameters, mark midpoint F. Set compass to CF and with point at F mark off G. Set compass length CG and starting at C strike four arcs around circumference. Connect every second point. To Draw a PentagonTo draw a pentagon follow above but connect every point around circumference of circle.
Set miter saw at 36 degrees To Draw a HexagonSet compass to radius of circle AB Strike five arcs around cirfumference starting at A, connect arcs. Each side of a hexagon is equal to the radius of the circle it fits into. Set miter saw at 30 degrees. To Draw an OctagonDraw a square equal to the distance across the flats of required octagon. Draw lines from corner to corner to determine center of square. Set compass distance from corner to midpoint, draw arcs to intersect adjecent sides. Repeat on all corners, Connect arcs across corners. Set miter saw for 22.5 degrees. Equalateral TriangleSet compass to length of one side, AB. Draw arcs from A and B to intercect at C Connect AC and BC. Set miter saw at 30 degrees. * 30 degree butt joint suggested because 60 degree miter is past the limit of the scale and is a difficult cut to make. 
