t = int(input())
for i in range(t):
    x = [int(x) for x in input().split()]
    a = (x[0]-x[2])**2 + (x[1]-x[3])**2 
    b = (x[4]-x[6])**2 + (x[5]-x[7])**2
    if x[:4] == x[5:]:
        print("Yes")
        continue
    if a > b:
        da = (x[2]-x[0], x[3]-x[1]) 
        db = (x[6]-x[4], x[7]-x[5])
        if da[0]*db[1]-da[1]*db[0] == 0:
            if da[0]*db[0]+da[1]*db[1] > 0:
                print("Yes")
                continue
    print("No")