#include <iostream>
using i64 = long long;
#define rep(i,n) for(i64 i=0; i<i64(n); i++)
using namespace std;

void testcase(){
    i64 ax, ay, bx, by, cx, cy; cin >> ax >> ay >> bx >> by >> cx >> cy;
    i64 fx = ax * bx - ay * by;
    i64 fy = ax * by + ay * bx;
    cout << (fx * cy == fy * cx ? "Yes\n" : "No\n");
}

int main(){
    ios::sync_with_stdio(false); cin.tie(nullptr);
    i64 T; cin >> T;
    rep(i,T) testcase();
    return 0;
}