In the diagrams below I'm just wondering what reasons would be given

Are these correct:

Diagram 1

a + 90 + 68 = 180 (angles on a straight line) I'm not sure if you can say supplementary angles as there has to be only two and same for adjacent angles on a straight line

a + 158 = 180

a = 22

Diagram 2

a + 34 + 22 = 90 (angles in a right angle) same applies here, I'm not sure whether you can say complementart angles or adjacent angles on a straight line as there has to been only 2

a + 56 = 90

a = 34

Thanks.