Ab Augmented Triads on Guitar — Shapes & Inversions

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The Ab Augmented triad is Ab–C–Fb — R–3–#5. Below you'll find all 12 close-voiced shapes within the first 12 frets: every inversion on every string set, color-coded and verified by the engine that powers our trainer.

Ab
R
root
C
3
major third
Fb
#5
augmented fifth
Root position (R in bass)1st inversion (3rd in bass)2nd inversion (5th in bass)

Ab Augmented triads — all positions

Strings 1·2·3 (e · B · G)

3 5 7 9 12 15 #5 3 R R #5 3 3 R #5

Strings 2·3·4 (B · G · D)

3 5 7 9 12 15 3 R #5 #5 3 R R #5 3

Strings 3·4·5 (G · D · A)

3 5 7 9 12 15 R #5 3 3 R #5 #5 3 R

Strings 4·5·6 (D · A · E)

3 5 7 9 12 15 #5 3 R R #5 3 3 R #5

Where Each Inversion Sits

Strings 1·2·3root position — open1st inversion — fret 42nd inversion — fret 8
Strings 2·3·42nd inversion — fret 1root position — fret 51st inversion — fret 9
Strings 3·4·51st inversion — fret 12nd inversion — fret 5root position — fret 9
Strings 4·5·6root position — fret 21st inversion — fret 62nd inversion — fret 10
Download PDF — Ab chart (all qualities)Open the full triads chart

How to Practice Ab Augmented Triads

Play the shapes on one string set from the nut up: root position at open first, then the next inversion, then the next — say the inversion out loud as you land on it. Then lock one fret region and switch between string sets instead. When the shapes come without thinking, test yourself in the trainer: it will flash Ab Augmented voicings for you to name, or name them for you to find.

Frequently Asked Questions

What notes are in the Ab Augmented triad?

Ab (root), C (major third), Fb (augmented fifth).

How many Ab Augmented triad shapes are there on guitar?

Within the first 12 frets there are 12 close-voiced shapes: root position, 1st and 2nd inversions spread across the four three-string sets. Above the 12th fret the same shapes repeat an octave higher.

What is an easy Ab Augmented triad shape to start with?

Start on strings 1·2·3 with the lowest shape on the neck (root position at open) — three notes, no barre, and the same grip moves to every other key.

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