m<2 is 113 m<3 is 67 and m<1 is 67. Theyre all congruent so if theyre across from each other for example like angle 2 and 4 theyre going to be the same angle. They give you one angle and thats all you need. That given information give you the degree for angle 4 and 2. Then you see that angle 2 and 3 together make a straight like which is 180 degrees so you take 180-113 to find what the degree of angle 3 is. Youll see its 67, and since its across from angle 1 that means it is also 67 degrees!
