T = int(input())
for i in range(T):
   x1, y1, x2, y2, X1, Y1, X2, Y2 = map(int, input().split())

   P1 = complex(x1, y1)
   P2 = complex(x2, y2)
   Q1 = complex(X1, Y1)
   Q2 = complex(X2, Y2)

   A = P1-P2
   B = Q1-Q2

   k = 1 - (B/A)
   if k.imag == 0 and 0 < k.real < 1:
      if Q1 - (B/A) * P1 == Q2 - (B/A) * P2:
         print("Yes")
   else:
      print("No")