For this case, we have by definition, that the four internal angles of a square measure 90 degrees. If we draw the diagonals of the square we have that the angles are divided between 2, that is, they go to measure 45 degrees.
So, according to this definition we have to:
[tex]Angle\ 3 = \frac {90} {2}\\Angle\ 3 = 45[/tex]
Answer:
The angle 3 is 45 degrees
Option C
