Drag the two points around and the perpendicular bisector will be graphed. Hover or the bottom right corner and a green button will appear. This button will allow you to see the coordinates of the two points as well as the equation of the perpendicular bisector. Hover over the coordinates for the points to enter new coordinates for the points.
v1: moves points together https://scratch.mit.edu/projects/845777860/ v2: graphs with slope https://scratch.mit.edu/projects/845786251/ v3: graphs with slope (instant) https://scratch.mit.edu/projects/846323177/ v4: graphs with chosen, draggable points https://scratch.mit.edu/projects/846952935/