from math import degrees, atan

EPS = 1e-9

for _ in range(int(input())):
    ax, ay, bx, by, cx, cy = map(int, input().split())

    a = degrees(atan(ay/ax)) if ax != 0 else 90
    b = degrees(atan(by/bx)) if bx != 0 else 90
    if 0 <= cx:
        c = degrees(atan(cy/cx)) if cx != 0 else 90
    else:
        if cy != 0:
            c = 90+degrees(atan(abs(cx)/cy))
        elif 1 <= cx:
            c = 0
        else:
            c = 180
    if abs((a+b)-c) <= EPS:
        print("Yes")
    else:
        print("No")