#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int t;
    cin >> t;
    while(t--){
        ll a, b, c, d, A, B, C, D;
        cin >> a >> b >> c >> d >> A >> B >> C >> D;
        ll det = -(A-a) * (D-d) + (B-b) * (C-c);
        if(det==0){
            cout << "No" << endl;
            continue;
        }
        if(-(D-d)*(c-a) + (C-c)*(d-b) == -(B-b)*(c-a) + (A-a) * (d-b)){
            cout << "Yes" << endl;
        }
        else{
            cout << "No" << endl;
        }
    }
    return 0;
}