A 45 degrees
B 90 degrees
C 135 degrees

Answer:
The measure of [tex]\angle 3[/tex] :
[tex]\angle 3 = 45\textdegree[/tex]
Step-by-step explanation:
The measurement of [tex]\angle 3[/tex] is also [tex]45\textdegree[/tex], because both [tex]\angle 3[/tex] and the angle with the measure of [tex]45\textdegree[/tex] are congruent.