We know that the sum of the internal angles of a triangle is 180°.
And a right angle measures 180°. Therefore, from the exterior angle we find the other angle:
[tex]180-128=52[/tex]
so, for x:
[tex]\begin{gathered} 24+52+x=180 \\ 76+x=180 \\ 76+x-76=180-76 \\ x=104 \end{gathered}[/tex]
answer: x = 104°
