n = int(input())
for i in range(n):
    c = input().split(' ')
    ax = int(c[0])
    ay = int(c[1])
    bx = int(c[2])
    by = int(c[3])
    cx = int(c[4])
    cy = int(c[5])

    cr = cx
    ci = (ax * ax + ay * ay) * (bx * bx + by * by)
    abr = ax * bx - ay * by
    abi = cx * cx + cy * cy
    print('Yes' if cr * cr * ci == abr * abr * abi else 'No')