Construct an angle bisector

Maths

a) A straight line splitting an angle into two unequal angles

c) A straight line splitting an angle into two equal angles

a) Mark any point on both of the given lines

b) Use a compass to mark a point of both of the given lines, without altering the  width of the compass

c) Create a sector joining the ends of both lines with a compass

What is the first step when creating an angle bisector?

a) A straight line which is parallel to another line

b) A straight line which intersects another straight line at any point

c) A straight line which intersects another straight line through the midpoint