page+9.5


 * __9.5__**
 * Objectives:**
 * Define special cases of segments related to circles, including secant-secant, secant-tangent, and chord-chord segments.


 * develop and use theorems about measures of the segments.

__**Theorems**__:
 * Theorem 1**- In two segments are tangent to a circle from the same external point, then the segments are of equal length.


 * Theorem 2**- If two secants intersect outside a circle, the product of the lengths of one segment and its externam segment equals the product of the lenghts of the tangent segment squared.


 * Theorem 3**-If a secant and a tangent intersect outside a circle, then the product of the lengths of the secant segment and its external segment equals the length of the tangent segment squared.


 * Theorem 4**- If two chords intersect inside a circle, then the product of the lengths of the segments of one chord equals the product of the lenght of the sengments of the other chord.

link to 9.6