def dist(x1,y1,x2,y2):
	return (x1-x2)**2+(y1-y2)**2

t=int(input())
for _ in range(t):
	x1,y1,x2,y2,X1,Y1,X2,Y2=map(int,input().split())
	if dist(x1,y1,x2,y2)<dist(X1,Y1,X2,Y2):
		print("No")
	elif dist(x1,y1,x2,y2)==dist(X1,Y1,X2,Y2):
		if [x1,y1,x2,y2]==[X1,Y1,X2,Y2]:
			print("Yes")
		else:
			print("No")
	else:
		ssi = y2-y1
		sbo = x2-x1
		tsi = Y2-Y1
		tbo = X2-X1
		if ssi==0:
			if tsi==0 and sbo*tbo>0:
				print("Yes")
			else:
				print("No")
		elif sbo==0:
			if tbo==0 and ssi*tsi>0:
				print("Yes")
			else:
				print("No")
		else:
			if ssi*tbo==sbo*tsi and ssi*tsi>0:
				print("Yes")
			else:
				print("No")