3 ms·

Both spheres are symmetric around this line, so a point on intersection anywhere but on the line would give you a circle of intersection (and so a disk, by conv

• spenczar5 5y ago
  How do you know they are both symmetric around this line? The rest of your argument makes sense to me, yeah.
  • unnah 5y ago
    The spheres are symmetric around the line because the line goes through the center points of the spheres.