Question

Given that Ray B A bisects ∠DBC, which statement must be true? m∠ABD = m∠ABC AB ≅ BC B is the midpoint of DC. m∠DBC = 90°

Answer 1

Answer:

A

Step-by-step explanation:

Because I said this was the answer. I know all.

Answer 2

Answer:

A.$m\angle ABD=m\angle ABC$

Step-by-step explanation:

We are given that a  ray BA bisects angle DBC.

We have to find true statement .

Angle bisector property:When a ray bisect any angle then the angles  made by bisection of angle are equal.

When ray BA bisects angle DBC

Then, $m\angle ABD=m\angle ABC$

By angle bisector property.

Therefore, option A is true.

Answer:A.$m\angle ABD=m\angle ABC$