Parallel lines appear to intersect according to perspective. But, the more distant parts of the lines are the parts that appear to intersect. Here, where the lines actually do intersect, the more distant parts are away from the intersection. If these are ideal lines such that one could not gauge distance, and one is only looking downward, such as a projection onto a plane, then they are visually indistinguishable from parallel lines. Whether that’s the same thing as them appearing to be parallel may be … a matter of perspective. But, since this is a bird with 360 degree view, it can see that the lines do not also extend above the bird as parallel lines would, so they do not appear parallel to it.
Actually non-parallel lines which goes out from a point at angle alpha, appear to be parallel far away from your standing point, above the intersection point.
Parallel lines appear to intersect according to perspective. But, the more distant parts of the lines are the parts that appear to intersect. Here, where the lines actually do intersect, the more distant parts are away from the intersection. If these are ideal lines such that one could not gauge distance, and one is only looking downward, such as a projection onto a plane, then they are visually indistinguishable from parallel lines. Whether that’s the same thing as them appearing to be parallel may be … a matter of perspective. But, since this is a bird with 360 degree view, it can see that the lines do not also extend above the bird as parallel lines would, so they do not appear parallel to it.
Actually parallel lines appear to intersect.
Actually non-parallel lines which goes out from a point at angle alpha, appear to be parallel far away from your standing point, above the intersection point.