z(a,b){return!a&b<0|a<0;}main(a,b,c,d,e,f){for(gets(&a);~scanf("%d%d%d%d%d%d",&a,&b,&c,&d,&e,&f);puts(a-c|d-f&&z(a-=b,d-=e)&z(c-=b,f-=e)|z(-a,-d)&z(-c,-f)|z(d,a)&z(f,c)|z(-d,-a)&z(-f,-c)||a*d<0&c*f<0&a*f!=c*d?"YES":"NO"));}