How To Measure A 45 Degree Angle With A Ruler. This page shows how to construct (draw) a 45 degree angle with compass and straightedge or ruler. The easiest way to measure an angle is to use a protractor. Line up the short end of your ruler with the bottom ray.
It has two sets of markings, 0 to 180 degrees.
Line up the short end of your ruler with the bottom ray. How to construct a 45 degree angle using compass and straightedge? Since most protractors have measurements in degrees it is often necessary to use a formula to convert your measurement to. If you need to, make the sides of the angles longer with a ruler. Draw four dots, and connect them so that you get a quadrilateral. It is graduated from 0 to 180 degrees and can be directly used to measure any angle within the range. .45 degree end that was hooked to the board for you angle. For those that need a little help with the math, use the tangent function available on your.
