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Circular segment. A circular segment (in green) is enclosed between a secant/chord (the dashed line) and the arc whose endpoints equal the chord's (the arc shown above the green area). In geometry, a circular segment or disk segment (symbol: ⌓) is a region of a disk [ 1] which is "cut off" from the rest of the disk by a straight line.
A chord (from the Latin chorda, meaning "bowstring") of a circle is a straight line segment whose endpoints both lie on a circular arc. If a chord were to be extended infinitely on both directions into a line, the object is a secant line. The perpendicular line passing through the chord's midpoint is called sagitta (Latin for "arrow").
I–V–vi–IV chord progression in C Play ⓘ. vi–IV–I–V chord progression in C Play ⓘ. The I–V–vi–IV progression is a common chord progression popular across several genres of music. It uses the I, V, vi, and IV chords of a musical scale. For example, in the key of C major, this progression would be C–G–Am–F. [1 ...
List of chord progressions. The following is a list of commonly used chord progressions in music . Mix. I–IV– ♭ VII–IV. Mix. Mix. Mix. Omnibus progression. Mix.
Barre chord. A barre chord ("A♯ minor"), with the index finger used to bar the strings. A, E major barre chord, then open E major chord. Play open E-major chord arpeggio, then barre, then open ⓘ. In music, a barre chord (also spelled bar chord) is a type of chord on a guitar or other stringed instrument played by using one finger to press ...
A chord chart (or chart) is a form of musical notation that describes the basic harmonic and rhythmic information for a song or tune. It is the most common form of notation used by professional session musicians playing jazz or popular music. It is intended primarily for a rhythm section (usually consisting of piano, guitar, drums and bass ).
In music theory, a ninth chord is a chord that encompasses the interval of a ninth when arranged in close position with the root in the bass. [1] The ninth chord and its inversions exist today, or at least they can exist. The pupil will easily find examples in the literature [such as Schoenberg's Verklärte Nacht and Strauss's opera Salome]. It ...
In music theory, an eleventh chord is a chord that contains the tertian extension of the eleventh. Typically found in jazz, an eleventh chord also usually includes the seventh and ninth, and elements of the basic triad structure. Variants include the dominant eleventh (C 11, C–E–G–B ♭ –D–F), minor eleventh (Cm 11, C–E ♭ –G–B ...