Question

Is the bisector of ∠ABC and is the bisector of ∠ACB.

Also,
Which of the following theorems would you use to help you prove ?

Answer 1

ASA

Explanation:

You can show the angles at either end of segment BC in triangles MBC and LCB are congruent, so you have two angles and the segment between. The appropriate theorem in such a case is ASA.