Answer:
a = 90
b = 28
c = 68
d = 22
Step-by-step explanation:
[tex]a = 90[/tex]
[tex]d=22[/tex]
[tex]22+90=112[/tex]
[tex]180-112=68[/tex]
[tex]c=68[/tex]
[tex]62+90=152[/tex]
[tex]180-152=28[/tex]
[tex]b=28[/tex]
