The sum of the angles in a triangle is less than 180 degrees, the more so, the larger the sides of the triangle. Studies in Non-Euclidian Geometry - Page 47 by Carolyn Soward Armentrout - 1925 - 100 pages Full view - About this book
...past in connection with color scaling (eg, MacAdam, 1981; Volz, 1998b). In the hyperbolic geometry the sum of the angles in a triangle is less than 180° degrees, in the elliptic geometry greater than 180° degrees. In string theory modern physicists have proposed...
The sum of the angles in a triangle is less than 180 degrees, the more so, the larger the sides of the triangle. 