Saccheri–Legendre theorem Saccheri–Legendre theorem In absolute geometry, the Saccheri–Legendre theorem states that the sum of the angles in a triangle is at most 180°. Absolute geometry is the geometry obtained from assuming all the axioms that lead to Euclidean geometry with the exception of the axiom that is equivalent to the parallel postulate of Euclid. The theorem is named after Giovanni Girolamo Saccheri and Adrien-Marie Legendre. The existence of at least one triangle with angle sum of 180 degrees in absolute geometry implies Euclid's parallel postulate. Similarly, the existence of at least one triangle with angle sum of less than 180 degrees
Mickey Mouse degrees of a B.A. degree in Education Studies. One thing these courses share is that they are "vocational", which are perceived to be less intellectually rigorous than the traditional academic degrees. Defenders of these courses object that the derogatory comments made in the media rely on the low symbolic capital of new subjects and rarely discuss course contents beyond the titles. Another factor is the correct or incorrect perception that the take up of these subjects, and the decline of more traditional academic subjects like science, engineering, mathematics, is causing annual grade rise in the United Kingdom. The A-level in General