/*
Things to notice:
1. do not calculate useless values
2. do not use similar names
 
Things to check:
1. submit the correct file
2. time (it is log^2 or log)
3. memory
4. prove your naive thoughts 
5. long long
6. corner case like n=0,1,inf or n=m
7. check if there is a mistake in the ds or other tools you use
8. fileio in some oi-contest

9. module on time 
10. the number of a same divisor in a math problem
11. multi-information and queries for dp and ds problems
*/
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define fi first
#define se second
#define pii pair<long long,long long>
#define mp make_pair
#define pb push_back
const int mod=998244353;
const int inf=0x3f3f3f3f;
const int INF=1e18;

void solve()
{
	int x1,y1,x2,y2,x3,y3,x4,y4;
	cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
	if(x1==x3||x2==x4)
	{
		if(x2!=x4||x1!=x3||y4-y2!=y1-y3) cout<<"No\n";
		else cout<<"Yes\n";
	}
	if(y1==y3||y2==y4)
	{
		if(y2!=y4||y1!=y3||x4-x2!=x1-x3) cout<<"No\n";
		else cout<<"Yes\n";
	}
	if((x1-x3)*(y4-y2)==(x4-x2)*(y3-y1)) cout<<"Yes\n";
	else cout<<"No\n";
}
signed main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	int _=1;
	cin>>_;
	while(_--) solve();
	return 0;
}