This week we learned about secants and special segments. In theorem 10.7 we learned special segments in a circle. In theorem 10.15 we learned that if two chords intersect in a circle the length of chord segments are equal. In theorem 10.16 we learned that if 2 secants intersect in the exterior of a circle its external secant segment is equal to the product of the measures of the other secants and external secant segment. In theorem 10.17 if a tangent and a secant intersect in the exterior of a circle, then the square of the measure of the tangent is equal to the product of the measure of the tangent is equal to the product of the measure of the secant and its external secant segments. We also learned the words chord segment, secant segment, external secant segment, and tangent segment. We learned how to solve different problems using the information that was given.