First set both equation equal to each other since the lines are parallel means that the corresponding angles are congruent. 2x+16=3x-12 x=28 then substitute for x in the equation and they both equal 72 so that is correct but then you need to subtract 180 from 72, so 180-72=108 so the answer is 108. :) If you're wondering why subtract from 180 is bc they are supplementary meaning both angles should add up to 180
13 because if the height is 14 you would subtract 28 because there’s two sides. Then you would get 26, divide that by 2 and get 13 for the base. Idk if it makes sense