Question

Roger plans to cut a piece of plywood along the line segment DE. He uses a compass and straightedge to construct segment DE perpendicular to side DC as shown. Image posted.

Which of these are the correct points at which Roger places the compass to make the arcs which intersect at point E?


a point on segment AD and a point on segment DC








a point on segment DC and a point on segment BC








two points along segment DC which are equidistant from point D








two points along segment DE which are equidistant from point D

Answer 1

I'm really lost on this one.

Answer 2

two points along segment DC which are equidistant from point D,
extend DC to the left