Katie is working on a blueprint for a fence she is designing. She will need to construct parallel lines to ensure that the second slat is parallel to the first. Which step will Katie need to do first to ensure that the second slat is parallel to the first slat in the diagram below? a line Draw a second line using a straightedge so that it intersects the first. Draw a second line using a straightedge so that it is parallel to the first. Create two arcs above the line using a compass. Create arcs above and below the line using a compass.