Question 173114
Are you sure this is not a typo?

You said that angle RBA is congruent to angle DAB but these angles are not found in the given triangles that must be proven.

Angle B is part of triangle DBX and angle D is not in triangle RAX.

This creates a problem because both triangles share an angle that belongs the other.

I will let you reply.

If it is not a typo, then say so.