Robert is completing construction of a
square inscribed in a circle, as shown
below. What should be the next step in
his construction?
A
Construct a perpendicular bisector to line
AB.
O Place his compass on the radius and draw
two arcs above and below line AB.
O Make another circle from point B with the
same radius as his original circle.
O Draw a line parallel to line AB that touches
the circle at point A.
B