判断三个点是否能够构成直角三角形

1.无法构成三角形，即三点共线 输出They are in a line

2.可以构成三角形，但不是直角三角形，输出no

3.可以构成直角三角形，输出yes-Can be configured to determine whether the three points right triangle

1. can not form a triangle, that is collinear output They are in a line

2. Can the triangle, but not a right triangle, no output

3. may form a right triangle, the output yes