#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
	int TT;
	cin>>TT;
	while(TT--){
		int a,b,c,d,e,f,g,h;
		cin>>a>>b>>c>>d>>e>>f>>g>>h;
		cout<<((c-a)*(h-f) == (d-b)*(g-e) && (c-a)*(f-d) != (d-b)*(e-c) ? "Yes" : "No")<<endl;
	}
}