def gcd(a,b):
    while b!=0:
        r=a%b
        a,b=b,r
    return abs(a)

def eval(xa,ya,xc,yc,xb,yb,xd,yd):
    s=(xa-xb)*(yc-ya)-(ya-yb)*(xc-xa)
    t=(xa-xb)*(yd-ya)-(ya-yb)*(xd-xa)
    if s*t>0:return False
    s=(xc-xd)*(ya-yc)-(yc-yd)*(xa-xc)
    t=(xc-xd)*(yb-yc)-(yc-yd)*(xb-xc)
    if s*t>0:return False
    True

T=int(input())
for _ in range(T):
    x1,y1,x2,y2,X1,Y1,X2,Y2=list(map(int,input().split()))
    if eval(x1,y1,x2,y2,X1,Y1,X2,Y2):
        print("No")
        continue

    diff_x1=x1-X1
    diff_y1=y1-Y1
    diff_x2=x2-X2
    diff_y2=y2-Y2
    g1=gcd(diff_x1,diff_y1)
    g2=gcd(diff_x2,diff_y2)

    diff_x1//=g1
    diff_y1//=g1
    diff_x2//=g2
    diff_y2//=g2
    
    if diff_x1==-diff_x2 and diff_y1==diff_y2:print("Yes")
    elif diff_x1==diff_x2 and diff_y1==-diff_y2:print("Yes")
    else:print("No")