How do you determine if vectors are parallel or orthogonal?

Question

anonymous · Answer

I know if one can be evenly divided by the other then they are something, just not exactly what.

anonymous · Answer

@zepdrix @jdoe0001

zzr0ck3r · Answer

how do you divide vectors?

zzr0ck3r · Answer

vectors are perpendicular if their dot product is 0

jdoe0001 · Answer

get the dot product of both, see what you get, if it's 0, then they're "orthogonal" or perpendicular

anonymous · Answer

ok. If they are parallel then you can multiply one by a certain number (I think k) and they are parallel

jdoe0001 · Answer

parallel vectors, are just 

yes... you're correct, one is a multiple of another
like say    (2,4) and (4,8)   4, 8 is just 2 (2,4)

so they're parellel
or (3,7)  and (12, 28),   12,28 is just 4 ( 3, 7), thus parallel

anonymous · Answer

Thanks. I knew the multiplication thing just not what it meant... :)

jdoe0001 · Answer

:)

zzr0ck3r · Answer

but dont say divide ;)