Draw ∠ABC of measure 115∘ and bisect it.
1. Draw a ray BC.
2. With the help of a protractor, draw an ∠ABC of 115∘.
3. With one end of the compass at B, mark two equidistant arcs on rays BA and BC.
4. From the two points on the rays, draw two intersecting arcs. Join B to the intersection point of those arcs.
Ray BM is the angle bisector of ∠ABC.