User:Atcovi/Geometry5

10-6
https://www.augusta.k12.va.us/cms/lib/VA01000173/Centricity/Domain/823/chap10.pdf - 561
 * Theorem 10.12-If two secants/chords intersect in the interior of a circle, then the measure of an angle formed is one half the sum of the measures of the arcs intercepted by the angle and its vertical angle.
 * Theorem 10.14-Segments of Chords Theorem: If two chords intersect in the interior of a circle, then the product of the lengths of the segments of one chord is equal to the product of the lengths of the segments of the other chord.