Question

Carla uses a compass and straightedge to construct perpendicular lines. Daryl uses technology to construct perpendicular lines. In your own words, describe how Carla's construction steps will be different from Daryl's construction steps?

Answer 1

Carla's construction steps are manual, she has to draw some arcs to get a couple of points and then connect them by a straight line with the help of the straightedge. On the other hand, Daryl can draw a line in the computer and see which angle it makes respect some reference, then when he draws the second line he just add 90° to the angle of the previous line, to make them perpendicular. He doesn't need any auxiliary arcs or points.