for _ in range(int(input())):
    x1,y1,x2,y2,X1,Y1,X2,Y2 = map(int,input().split())
    if (x2 - x1) ** 2 + (y2 -y1) ** 2 <= (X2 - X1) ** 2 + (Y2 -Y1) ** 2:
        print("No")
        continue
    if (y2-y1)*(X2-X1) == (Y2-Y1)*(x2-x1):
        print("Yes")
        continue
    print("No")