#1
I was constructing the chords that would go with the major scale, and came across a problem. I know the 7th chords are already listed on this site, but i wanted to do it myself to make sure i know what i was doing.
The patterns were like this:

i ii iii iv v vi vii i ii iii iv v vi vii v degree
0 2 4 5 7 9 11 12 14 16 17 19 21 23 24 frets(or semitones)

i 1 3 5 7 Major Makes sense
ii 1 3b 5 b7 Minor Makes sense
iii 1 b3 5 b7 Minor Makes sense
iv 1 3 5 7 Major Makes sense
v 1 3 5 b7 Dominant Makes sense
vi 1 b3 5 b7 Minor Makes sense
vii 1 b3 b5 b7 wait wtf??

On the 7th degree, there is a flat 5th, which doesn't fit any of the formulas for 7th chords. The tutorial I was looking at though listed all of the 7th chords in all of the degrees, and said it was a minor chord, but thats not the correct formula. Anyone? just ignore it?

edit: Degrees did not line up at all with semitones
Gibson SG Standard
Ibanez S2170FB
Peavey JSX
Marshall 1960A
TEXAS A&M
#3
half-diminished, thank you sir, i have never heard of that before
Gibson SG Standard
Ibanez S2170FB
Peavey JSX
Marshall 1960A
TEXAS A&M
#4
A full diminished would (I think) use a diminished 7th as well. It would give you: 1, b3, b5, bb7.
My gear:
Ibanez RG350DX - Vintage VR3000 - Squire Telecaster
Marshall 15W
RAT distortion pedal - Boss Compression\Sustain pedal
#5
Not as well, instead of. The bb7 means that you lower the seventh two semitones rather than just one for b7. bb7 is sonically equivalent to the major sixth, though it is to be written as bb7.
#6
Yea, thx for the info guys
Gibson SG Standard
Ibanez S2170FB
Peavey JSX
Marshall 1960A
TEXAS A&M