angle between two points javascript code example

Example 1: javascript distance between two points

Math.hypot(x2-x1, y2-y1)

Example 2: javascript angle equation of a line

// point 1 (x1, y1) or origine of vertex
// point 2 (x2, y2)
var dx = x2 - x1
var dy = y2 - y1
var ang = Math.atan2(dy, dx) * 180 / Math.PI;