In Euclidean geometry, the sum of the angles in a triangle always add to 180. In spherical geometry, the sum must be between 180 and 540.
1. adds up to 312 [tex]\implies[/tex] spherical only 2. adds up to 94 [tex]\implies[/tex] neither 3. adds up to 180 [tex]\implies[/tex] Euclidean only 4. adds up to 296 [tex]\implies[/tex] both