The simplest method is to establish a rectangular coordinate system with point A as the origin, AD as the X axis, AP as the Z axis and BA as the Y axis. Then the coordinates of the point PABCD5 are (0,0, radical number 2) (0,0,0) (0,-1, 0) (1, -65438) respectively. They are all a set of formulas to solve problems, just look up the cover formula.