✓ 1. Press Continue to draw a line through P that is perpendicular to line m.
✓ 2. Press Continue to draw a circle with center P and radius 1 unit.
✓ 3. What is the distance from line m to each point on the circle?
✓ 4. Move point P to a different location to plot 2 more points equidistant from m.
✓ 5. Continue to move P to three different locations to plot more points that are equidistant from m.
✓ 6. The locus of all points equidistant from line m consists of two lines parallel to m.