First of all...YOU'RE NOT DUMB!!! You just need some help! Being confident in your knowledge/skills is half the work! ;DAnd second...PART 1:28. Polygon ABCDE is a pentagon (it has five sides). The sum of the interior angle measures for a pentagon is 540°. Here's what we know:m<A = 90°m<B = 90°m<D = 90°m<C = m<EFirst, find the sum of the measures of angles A, B, and D.(90)(3) = 270°.Next, find the combined angle measure of angles C and E.540 - 270 = 270°.Finally, find the measure of angle E (or m<AED).270 / 2 = 135°.So, to fill in the blanks:90 · 3 + x · 2 = 540m<AED = 135°.29. (a) 360°(b) hexagon(c) 1080(d) hendecagon (11 sides)I have attached a table containing a list of polygons, their side-count, and the sum of their interior angles.PART 2:Complimentary angles are angles whose measures add to equal 90°.Supplementary angles are angles whose measures add to equal 180°.30. 35° + 55° = 90°; Complimentary.31. 62° + 108° = 170°; Neither.Hope this helps!