Answer:
1. the given angle is supplementary to <1, so we can create an equation x + 75 = 180, where x is <1. We can solve this to get 105
3. <3 is vertical to <1, so they have the same value, this means that it is also 105
4. <4 is vertical to <2, angle to is given as 75, so <4 is also 75
5. <5 is corresponding to <1, so this means that they are in the relatively same spot. This means that the values are the same, so <5 is also 105
6. <6 corresponds to <2, this means they also have the same value so <6 is also 75
7. <7 is vertical to <5, and we know <5 is 105, so <7 is also 105
8. <8 corresponds to <4, we know that <4 is 75, so <8 is also 74