Lead–Sheet Symbol Chord Quality Notes in the Chord $\left.\text{F}\right.$ major $\text{F}$–$\text{A}$–$\text{C}$ $\left.\text{G}\text{m}\right.$ minor $\text{G}$–$\text{B}^♭$–$\text{D}$ $\left.\text{D}^{\circ}{}\right.$ diminished $\text{D}$–$\text{F}$–$\text{A}^♭$ $\left.\text{C}{+}\right.$ augmented $\text{C}$–$\text{E}$–$\text{G}^♯$
As you can see in the example above, major triads are represented by an uppercase letter ($\left.\text{A}\right.$, $\left.\text{E}\right.$, and $\left.\text{D}\right.$) while minor triads are represented with the root in uppercase followed by a lowercase “m” (e.g., $\left.\text{F}^♯{}\text{m}\right.$). Diminished triads are represented by including the diminished symbol ($\left.\text{}^{\circ}{}\right.$) after the chord root (e.g., $\left.\text{C}^{\circ}{}\right.$) while augmented triads are represented by including the augmented symbol after the root ($\left.\text{C}{+}\right.$).