Reflection of a point at 180 degree rotation of another point | Javascript Program to find the 180 degree reflection of one point around another point . ; Driver Code
function findPoint ( x1 , y1 , x2 , y2 ) { document . write ( " " + 2 * ( x2 - x1 ) + " " + 2 * ( y2 - y1 ) + " " ) ; } let x1 = 0 , y1 = 0 , x2 = 1 , y2 = 1 ; findPoint ( x1 , y1 , x2 , y2 ) ;