#include <stdio.h>
int main() {int N;double x1,x2,x3,x4,y1,y2,y3,y4;scanf("%d",&N);while (N--) {scanf("%lf %lf %lf %lf %lf %lf %lf %lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);if (((x2-x1)==(x3-x4) && (y1-y2)==(y4-y3)) || ((y1-y2)==(y3-y4) && (x2-x1)==(x4-x3))) puts("YES"); else puts("NO");}return 0;}