points = [tuple([int(s) * 2 for s in input().split()]) for _ in range(3)]

if len(set(points)) <= 2:
    print(-1)
    exit()


def sign(x):
    if x > 0:
        return 1
    elif x == 0:
        return 0
    else:
        return -1


def line(p, q):
    px, py = p
    qx, qy = q

    mx, my = (px + qx) // 2, (py + qy) // 2

    if px == qx:
        a, b, c = 1, 0, -my

    elif py == qy:
        a, b, c = 0, 1, -mx

    elif sign(px - qx) == sign(py - qy):
        a, b, c = 1, 1, -mx - my

    else:
        a, b, c = -1, 1, mx - my

    return a, b, c


def cross(ln1, ln2):
    a1, b1, c1 = ln1
    a2, b2, c2 = ln2

    if a1 * b2 - a2 * b1 == 0:
        if b1 * c2 - b2 * c1 == 0:
            return -1, []
        else:
            return 0, []

    x = (b1 * c2 - b2 * c1) / (a1 * b2 - a2 * b1)
    y = (a2 * c1 - a1 * c2) / (a1 * b2 - a2 * b1)

    return 1, [(x, y)]


def same(p, q):
    px, py = p
    qx, qy = q

    return abs(px - qx) == abs(py - qy)


def inner(p, q, v):
    px, _ = p
    qx, _ = q
    vx, _ = v

    return min(px, qx) < vx < max(px, qx)


ln1 = line(points[0], points[1])
ln2 = line(points[1], points[2])

size, res = cross(ln1, ln2)

if size == 1:
    x, y = res[0]

    if same(points[0], points[1]):
        if not inner(points[0], points[1], (x, y)):
            print(-1)
            exit()

    if same(points[1], points[2]):
        if not inner(points[1], points[2], (x, y)):
            print(-1)
            exit()

    print(1)
    print(x / 2, y / 2)
else:
    print(size)