Answer:
<4 is 102 and <1 and <3 are both 78
Explanation:
<4: 102 because it is vertical to <2, and all vertical angles are congruent
<1: 78 angle 1 is adjacent to angle 2, meaning that they share a side. Because of this they are a linear pair, so they add up to 180. 180-102
<3:Using the vertical angles theorem, we can say that <1=<3 as they are vertical angles.