import sys
input = sys.stdin.readline

T=int(input())

for tests in range(T):
    AX,AY,BX,BY,CX,CY=map(int,input().split())
    A=AX*AX+AY*AY
    B=BX*BX+BY*BY
    C=CX*CX+CY*CY

    if AX==0:
        A=1
    if BX==0:
        B=1

    bunshi = AX*BX - (A-AX*AX)*(B-BX*BX)
    bunbo=A*B

    #print(bunshi,bunbo,CX,C)

    if bunshi*bunshi*C==CX*CX*bunbo:
        print("Yes")
    else:
        print("No")