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A Augmented Triads on Guitar — Shapes & Inversions

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The A Augmented triad is A–C#–F — R–3–#5. Below you'll find all 11 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.

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

A 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

A Augmented triads — full position reference

A Augmented triads on Strings 1·2·3 (e · B · G), standard tuning
InversionPositionNotes (low to high)Intervals
Root positionstring 3 fret 2, string 2 fret 2, string 1 fret 1A–C#–FR–3–#5
1st inversionstring 3 fret 6, string 2 fret 6, string 1 fret 5C#–F–A3–#5–R
2nd inversionstring 3 fret 10, string 2 fret 10, string 1 fret 9F–A–C##5–R–3
A Augmented triads on Strings 2·3·4 (B · G · D), standard tuning
InversionPositionNotes (low to high)Intervals
2nd inversionstring 4 fret 3, string 3 fret 2, string 2 fret 2F–A–C##5–R–3
Root positionstring 4 fret 7, string 3 fret 6, string 2 fret 6A–C#–FR–3–#5
1st inversionstring 4 fret 11, string 3 fret 10, string 2 fret 10C#–F–A3–#5–R
A Augmented triads on Strings 3·4·5 (G · D · A), standard tuning
InversionPositionNotes (low to high)Intervals
1st inversionstring 5 fret 4, string 4 fret 3, string 3 fret 2C#–F–A3–#5–R
2nd inversionstring 5 fret 8, string 4 fret 7, string 3 fret 6F–A–C##5–R–3
Root positionstring 5 fret 12, string 4 fret 11, string 3 fret 10A–C#–FR–3–#5
A Augmented triads on Strings 4·5·6 (D · A · E), standard tuning
InversionPositionNotes (low to high)Intervals
Root positionstring 6 fret 5, string 5 fret 4, string 4 fret 3A–C#–FR–3–#5
1st inversionstring 6 fret 9, string 5 fret 8, string 4 fret 7C#–F–A3–#5–R

Where Each Inversion Sits

Strings 1·2·3root position — fret 11st inversion — fret 52nd inversion — fret 9
Strings 2·3·42nd inversion — fret 2root position — fret 61st inversion — fret 10
Strings 3·4·51st inversion — fret 22nd inversion — fret 6root position — fret 10
Strings 4·5·6root position — fret 31st inversion — fret 7
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How to Practice A Augmented Triads

Play the shapes on one string set from the nut up: root position at fret 1 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 A Augmented voicings for you to name, or name them for you to find.

Frequently Asked Questions

What notes are in the A Augmented triad?

A (root), C# (major third), F (augmented fifth).

How many A Augmented triad shapes are there on guitar?

Within the first 12 frets there are 11 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 A Augmented triad shape to start with?

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

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