Answer:
[tex] \boxed{x = 45} \:a nd \: \boxed{y = 90}.[/tex]
Step-by-step explanation:
[tex] let \: the \: unknown \: be : \: z \\ then : \\ 180 - 135 = z \\ z = 45. \\ but \: 180 - z = 135 \\ x + y= 135 . \\ but \: since \: both \: side \: are \: equal......then \\ \: both \: bases \: should \: be \: equal \to \\ \boxed{x = z = 45}. \\ 45 + y = 135 \\ y = 135 - 45 \\ \boxed{y = 90}.[/tex]
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