#include <iostream>
#include <iomanip>
#include <vector>
#include <string>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <algorithm>
#include <sstream>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <numeric>
#include <cmath>
#include <climits>
#include <limits>
#include <cfloat>
#include <fstream>
using namespace std;

int main()
{
//	cut here before submit 
	freopen("testcase.pl", "r", stdin);
	string str = "";
	int n;

	getline (cin, str );
	stringstream ssn(str);
	ssn >> n;

	int i,j;
	for (i = 0; i < n; ++i){
		vector <double> px (4, 0.0);
		vector <double> py (4, 0.0);
		getline (cin, str );
		stringstream ss(str);
		for (j = 0; j < 4; ++j){
			ss >> px[j] >> py[j];
		} // end for
		multimap <double, double> v;

		for (j = 0; j < 2; ++j){
			v.insert (make_pair (px[2*j + 1] - px[2*j], py[2*j + 1] - py[2*j] ) );
		} // end for

		multimap <double, double>::iterator it = v.begin();
		double xp = (*it).first;
		double yp = (*it).second;
		++it;		
		double xa = (*it).first;
		double ya = (*it).second;
		bool found = false;

		if (xp != 0. && yp != 0.){
			if ( fabs( (*it).first/xp - (*it).second/yp ) < 1e-6 ){
				found = true;
			}else{
				found = false;
			} // end if
		}else{	// if (xp == 0. || yp == 0. )
			if (yp != 0. ){ // xp == 0. && yp != 0.
				if (xa == 0.){
					found = true;
				}else{
					found = false;
				} // end if
			}else if (xp != 0.){ // xp != 0. && yp == 0.
				if (ya == 0.){
					found = true;
				}else{
					found = false;
				} // end if
			}else{ // if (xp == 0. && yp == 0.)
				if (xa == 0. &&  ya == 0.){
					found = true;
				}else{
					found = false;
				} // end if
			} // end if
		} // end if

		if (found ){
			cout << "YES" << endl;
		}else{
			cout << "NO" << endl;
		} // end if

	} // end for
		
	return 0;
}