>>12661937or in a more general sense, the r(x) can be written as
where k is the x-coordinate of the point D, it seems to be smaller than half a side length, this conflicts with
>>12662002>It lies in the middle of the side of the squarethat would be half of the length, the way you worded it, this isnt consistent with the graphics you provided
im not sure if this answer really is what you were searching for