N = int(input())
for _ in range(N) :
	A = list(map(int, input().split()))
	D = [A[2] - A[0], A[3] - A[1], A[6] - A[4], A[7] - A[5]]
	all_same = True
	for i in range(4) :
		all_same = all_same and A[i] == A[i + 4]
	if all_same :
		print("Yes")
	else :
		det = D[3] * D[0] - D[2] * D[1]
		dot = D[0] * D[2] + D[1] * D[3]
		if det == 0 and dot > 0 :
			print("Yes")
		else :
			print("No")