6.5 #35
A. Line BD is congruent to Line BD by the reflexive Property of congruence. line AB is congruent to line CB and angle ADB and angle CDB are right angles which makes triangle ABC and triangle CBD HL.
B. Yes because line AB is congruent to line CB which is congruent to line CE that is also congruent to line FE, Line BD is congruent to line EG which are all right triangles.