Find a method↗
The sum of the angles of a triangle is exactly 180° in Euclidean geometry, greater than 180° in spherical (or elliptical/Riemannian) geometry, and less than 180° in hyperbolic geometry.
Conditions: The figure is a triangle.; The geometry is specified as Euclidean, spherical, or hyperbolic.
2:55 – 3:17Watch this moment ↗
The sum of the angles of a triangle is exactly 180° in Euclidean geometry, greater than 180° in spherical (or elliptical/Riemannian) geometry, and less than 180° in hyperbolic geometry.
Conditions: The figure is a triangle.; The geometry is specified as Euclidean, spherical, or hyperbolic.
2:55 – 3:17Watch this moment ↗