given the angles e=52^{\circ} b=x^{\circ} c=x^{\circ} find angle d and b if  angle on a straight line =a,d; interior angles = a,b,c; interior angles = d,e,f;  exterior angles and opposite interior angles = a,f,e; exterior angles and opposite interior angles = d,b,c; base isoceles angles = b,c ; base isoceles angles = e,f; word problems = a,b,c