Angle trisection drawn through formula_25 to the semicircle, resulting in the intersection formula_28. The angle formula_48 generated by formula_49 and formula_50 is the angle formula_51 sought. Another means to trisect an arbitrary angle by a "small" step outside the Greek framework is via a ruler with two marks a set distance apart. The next construction is originally due to Archimedes, called a "Neusis construction", i.e., that uses tools other than an "un-marked" straightedge. The diagrams we use show this construction for an acute angle, but it indeed works for any angle up to 180 degrees. This requires three facts from geometry (at
Degrees of the University of Oxford or Mathematics, or Mathematics and Computer Science, or Mathematics and Philosophy, or Physics, or Physics and Philosophy, is held together with a higher degree, the holder will rank in precedence equally with a person who holds the same higher degree together with the Degree of Master of Arts. Degrees of the University of Oxford The system of academic degrees at the University of Oxford can be confusing to those not familiar with it. This is not merely because many degree titles date from the Middle Ages, but also because many changes have been haphazardly introduced in recent years. For example,