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.
here's one theorem that deals with triangle.. For right triangle with altitude (perpendicular to the opposite side of the vertex) to the hypotenuse drawn each leg and altitude is a geometric mean for 2 collinear segment on the hypotenuse that have a common end point with the geometric mean. draw a right triangle and a altitude to the hypotenuse.