In this lesson our instructor talks about special segments in a circle. First, she talks about chord segment and secant segments. Then she discusses tangent and secant segments. Four complete extra example videos round up this lesson.
If two chords intersect in a circle, then the products of the measures of the segments of the chords are equal. AB × BC = DB × BE
If two secant segments are drawn to a circle from an exterior point, then the product of the measure of one secant segment and its external secant segment is equal to the product of the measures of the other secant segment and its external secant segment
If a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment
Special Segments in a Circle
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.