Respuesta :

Let's draw a picture of our parallelogram:

We can note that x+80 must be equatl to 90 degrees, then x is given by

[tex]\begin{gathered} x=90-80 \\ x=10 \end{gathered}[/tex]

since x is the angle QRT, then angle QRT measure 10 degrees.

Ver imagen NikolinaA601361

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