Question

Using a protractor draw an angle of 110°•bisect it to get an angle of measure 55°

Answer 1

Draw an arc that is centered at the vertex of the angle. This arc can have a radius of any length. However, it must intersect both sides of the angle. We will call these intersection points P and Q This provides a point on each line that is an equal distance from the vertex of the angle. 
Now you will get 55 degree angle