T=int(input())

import math
from math import ceil, floor
from decimal import Decimal

for i in range(T):
  a,b,c,d,e,f=map(Decimal, input().split())
  aa=(a**2+b**2)
  bb=(c**2+d**2)
  cc=(e**2+f**2)
  aa=aa.sqrt()
  bb=bb.sqrt()
  cc=cc.sqrt()
  cosa=a/aa;cosb=c/bb;cosc=e/cc
  sina=b/aa;sinb=d/bb;sinc=f/cc
  l=cosa*cosb-sina*sinb 
  if abs(l-cosc)<10**(-10):
    print('Yes')
  else:
    print('No')