How is it that the D,Ab,G#,B,F Diminished chords have the same Exact
chord shape??

Same type of deal with Augmented Chords

Whats the deal?
All chords of a certain type have the same musical "shape" in that they contain the same notes relative to the root. That means that, depending on where your root is, you'll get chords with the same physical shape too...it's no different to D, Ab, G#, B and F major having the exact same shape if you play them as barre chords with the root on the low E.
Actually called Mark!

Quote by TNfootballfan62
People with a duck for their avatar always give good advice.

...it's a seagull

Quote by Dave_Mc
i wanna see a clip of a recto buying some groceries.

Yea but that is for bar chords without open strings for the maj/minor shapes right?
They are movable. But the Diminished shape has two open strings and stays at the
same frets..? Just moving the roots from the bottom?

Open D-1st fret G-Open B- 1st fret E
Because they all contain the same notes. A diminished 7th chord has no key on its own because all the notes are exactly three half steps(a minor third) apart. There's no way to distinguish the tonic, except by how you play it. So although there is a diminished 7th chord for every note, there are only three chords. D/F/Ab/B, C/Eb/Gb/A, and Db/E/G/Bb.
This space foreclosed, due to the ailing economy.
Simple answer; Diminished 7ths and Augmented triads divide the octave equally.
Dim 7ths can also be thought of as dom 7b9th chords (no root) A7b9 = C# E G Bb (3 5 7 9) this approach brings additional tonal material to play against the chord,

played as a diminished, these chords are usually used as "passing" tones to the next tone in a melody or bassline...

played as a 7b9 they could be used as an altered dom or part of any number of tasty turnarounds ... i have used them as a "four note chromatic sequence" in some blues progressions and enjoy the harmonic break they give a standard blues progression..


Diminished(7th) chords and augmented triads are symmetrical. What this means is pretty much what you said. A diminished 7th chord is just a bunch of minor thirds stacked on top of each other and they go nice and evenly into an octave(just as the major thirds of an augmented triad also stack to form an octave). All the intervals are the same, thus, each note in the chord can be regarded as the root without changing the pitch of any of the other notes.

EDIT: That's a slightly oversimplified way to think of those chords, but it helps in this situation.
Quote by EddieCraig
well why are d,ab,g#,b, and f major the same shape? (barre chords)

Because they have the same intervals. There are lots of different ways you can play each of those chords on a fret board. Oh, and read the sticky for some good info on chord construction.