T=int(input())
for _ in range(T):
  ax,ay,bx,by,cx,cy=map(int,input().split())
  x=ax*bx+(-ay)*by
  y=ay*bx+ax*by
  if y==0 and cy==0:
    print(["No","Yes"][x*cx>0])
  elif y!=0 and cy!=0:
    print(["No","Yes"][x*cy==cx*y])
  else:
    print("No")