The steps below show the construction of a perpendicular line, at a point O on the segment AB. Draw a line with a point O in the middle. Show two arches on the line at points A and B at equal distance from the point O on either side. Mark this figure as step 1. Repeat the figure of step 1 and mark a point P at right angle to point O. Join P and O. Mark this figure as step 3. Which statement describes the missing step 2?

Question

The steps below show the construction of a perpendicular line, at a point O on the segment AB.   Draw a line with a point O in the middle. Show two arches on the line at points A and B at equal distance from the point O on either side. Mark this figure as step 1. Repeat the figure of step 1 and mark a point P at right angle to point O. Join P and O. Mark this figure as step 3.  Which statement describes the missing step 2?