look where a is. c is perpendicular to it, making it 105 as well. b is supplementary to it, so u have to figure its angle to understand what h is. now im guessing you know to subtract 105 from 180 (bc these angles are supplementary) which is 75. like I was saying, looking at a and c, you notice e and g are the same as them. what is supplementary to e? h. (e being 105 makes h 75) I hope I helped u understand how this works bestie
