Based on the information of the given image you have the following relation:
The sum of angles 1, 2 and 3 are equal to 180° ==> Sum of interior angles of a triangle
The sum of angles 3 and 4 are equl to 180° ==> Sum of supplementary angles
Angle 4 ==> Exterior angle
The sum of angles 2 and 3 are equal to 92° ==> Remote interior angles
