The measure of the seven angles in a nonagon measure is 138,154,145,132,128,147,and130. if the two remaining angles are equal in measure, what is the measure of each angle

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy