#include <bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int T; cin >> T;
    while(T--){
        long long x1,y1,x2,y2,X1,Y1,X2,Y2;
        cin >> x1 >> y1 >> x2 >> y2 >> X1 >> Y1 >> X2 >> Y2;
        bool ok1 = false,ok2 = false;
        
        long long D = (x2-x1)*(x2-x1)+(y2-y1)*(y2-y1),A = (X2-X1)*(X2-X1)+(Y2-Y1)*(Y2-Y1);
        if(A == 0 || D <= A){cout << "No" << endl; continue;}
        long long dx2 = X2-X1,dy2 = Y2-Y1,dx1 = x2-x1,dy1 = y2-y1;
        if(dx1*dy2 == dx2*dy1) cout << "Yes" << endl;
        else cout << "No" << endl; 
    }
}