Chech whether 3 lines can form a triangle

function Program() {
    var a = Point(3, 4);
    var b = Point(2, 1);
    var line1 = Line(a, b);
    var line2 = Line(Point(2, 3), Point(0, 4));
    var line3 = Line(Point(1, 1), Point(7, 7));
    cons.innerHTML = CheckWhetherFormTriangle(line1, line2, line3);

    function CheckWhetherFormTriangle(line1, line2, line3)
    {
        var result = new Array(3);
        for (var i = 0; i < result.length; i++) {
            result[i] = CalcDistance(arguments[i].startPoint, arguments[i].endPoint);
        }
        //sort array
        result = result.sort(function (a, b) { return a - b; });
        if (result[2] < result[1] + result[0]) {
            return true;
        } else {
            return false;
        }
    }
    function CalcDistance(start, end)
    {
        return Math.sqrt((end.x - start.x) * (end.x - start.x) + (end.y - start.y) * (end.y - start.y));
    }
    function Point(x, y) {
        return {
            x: x,
            y: y,
            toString: function () { return "x: " + x + " y: " + y }
        };
    }
    function Line(start, end) {
        return {
            startPoint: start,
            endPoint: end
        };
    }
}