1. Construct a line parallel to line AB through point C.[br]2. Place a point D on the newly constructed parallel line to the right of point C.[br]3. Construct a line perpendicular to line AB through point C.[br]4. Mark the point of intersection of the two lines as point E.
What is the [math]m\angle AEC[/math]?
What is the [math]m\angle DCE[/math]?
What type of angle relationship does [math]\angle AEC[/math] and [math]\angle DCE[/math] have?