Availability, in the context of a computer system, refers to the ability of a user to access information or resources in a specified location and in the correct format.
Defined, the triangle proportionality theorem states that if you draw a line parallel to one of the sides of a triangle that also crosses the other two sides, then that line will divide the two sides in a proportional way.
triangle inequality. (mathematics). For real or complex numbers or vectors in a normed space x and y, the absolute value or norm of x + y is less than or equal to the sum of the absolute values or norms of x and y.