Respuesta :

renknee

Answer:

39°

Step-by-step explanation:

Angles that are complement to one another add up to 90 degrees.

  • This means that Angle 4 + 51 = 90

Now, to find the measure of Angle 4, we subtract 51 from 90.

  • [tex]90-51[/tex]
  • [tex]39[/tex]

Therefore, the answer is 39°.

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