I'm trying to nail my chord theory and I need some help,
I mainly need to know how you 'define' (if thats the right word) an augmented chord and a diminished chord.
For example:
I have C major - which is 1 3 5...then you have C dominant 7 which is 1 3 5 b7
i need the answer like that if possible...

I hope this makes sense...thanks!
also...i was sure of this...but no longer
what is the seventh chord with the triangle above it?
I was pretty sure that C^7 is c major 7
and C7 is c dominant 7
is that right?
C∆7, CM7, Cmaj7, C major 7--1, 3, 5, 7
C-7, Cm7, Cmin7, C minor 7---1, b3, 5, b7
C7, C dominant 7---1, 3, 5, b7
Cø7, Cm7b5, C-7b5, C half diminished 7---1, b3, b5, b7
Cº7, Cdim7, C diminished 7--1, b3, b5, bb7

Triad wise:
C, Cmaj-1, 3, 5
Cmin-1, b3, 5
Cº, Cdim-1, b3, b5
C+, C aug-1, 3, #5
augmented is 1-3-5# and diminished is 1-3b-5b
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