Answer:
Option B is not necessarily true.
Step-by-step explanation:
Option A.
AD =
Since triangle ABC is reflected to form triangle
So distance AD may be equal to distance . So this option is true.
Option B.
=
This statement is not correct because ≠
Option C.
m∠ACB = m∠
Since translated triangle and ΔABC are similar.
So the statement is true.
Option D.
m∠BAC = m∠
Since translated triangle and ΔABC are similar.
So the statement is true.
Therefore, option B is not necessarily true.