external secant segmant- the part of a secent segmant that is out side of the circle.

Secant segament-the part of the secant segmantthat extends form an extends from an an exterior from an exterior point the\at includes a chord of the circle.

Tangent segment- the point ofa tangent that extends from an exterior from an exterior

Theorem 10-15: if two chord intersect instead a circle,then the product of the