Respuesta :

irspow
Angles B and D are congruent so:

(360-112-74)/2=87°
myuuu
the measure of the angle is A, 87.

The total of all the angles have to add up to 360 and we know that the 2 missing angles have to be the same because the congruent lines.

112+74=186. 360-186=174/2=87

Hope this helps and have a great day! :D