Bi guide drew a picture of Matlab, simulating the appearance of a potato chip on the ground.
an arc surface falls on a plane, which is a tangent contact, that is, the two faces actually intersect a line.
is a potato chip dirty on the ground? It's dirty. How much dirty is it? A line is dirty. What is the area of a line? Equal to zero. So it's not dirty. It doesn't matter if
turns out, even if you plug it upright on the ground, it will connect from two points to a point.
a line, two points, a point, and its area is zero. This is called the tangent eating theorem. That is to say, potato chips, like this, can be eaten anyway.
