Vertical
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An object is in a vertical position when it is aligned in an "up-down" direction, perpendicular to the horizon.
- In science the vertical (or plumb line) is the direction of the force of gravity.
- A pair of angles are said to be vertical if they share the same vertex and are bounded by the same pair of lines but are opposite to each other.
- In music the vertical aspect is simultaneity, either intervals or harmony, as opposed to succession or the linear aspect
- In marketing and business in general, a vertical informally means a vertical market.
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