Geometry Problem, Online Education

Online Geometry Problem 602: Triangle, Angles, 30 and 45 Degrees, Cevian, Congruence

The figure shows a triangle ABC. The measures of angles A and C are 30 and 45 degrees, respectively. If AB = CD, find the measure of angle ABD.
 
 

Triangle, 30 and 45 degrees, cevian, congruence