public static function unitCircle(int $points = 11): array
    {
        $n           = $points - 1;
        $unit_circle = [];

        for ($i = 0; $i <= $n; $i++) {
            $x = cos(2 * pi() * $i / ($n));
            $y = sin(2 * pi() * $i / ($n));
            $unit_circle[] = [$x, $y];
        }

        return $unit_circle;
    }