Speed squares are a helpful saw guide for cutting 45- and 90-degree angles ... the desired angle on the board’s edge, and make your mark. Shown being marked is a 33-1/2 degree angle.

A right angle is exactly ¼ of a full 360 degree turn ... For example, an acute triangle will have three angles less than 90 degrees, where as an obtuse triangle will have one angle greater ...

A right angle is exactly ¼ of a full 360 degree turn ... For example, an acute triangle will have three angles less than 90 degrees, where as an obtuse triangle will have one angle greater ...