To find a segment perpendicular to a given segment and through a given point fold a piece of paper so that the fold goes through the point and the pieces of the segment on either side of the fold match up?
true or

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )