Question

1. statement reasons ray bc bisects <abd given m<abc = m<cbd what is the missing reason? type a response

Explanation:

By the definition of an angle - bisector, if a ray bisects an angle, it divides the angle into two congruent angles. Here, since ray BC bisects ∠ABD, ∠ABC and ∠CBD are congruent, which means their measures are equal.

Answer:

Definition of angle - bisector