Lesson: Special Segments in a Circle Mathematics • First Year of Secondary School

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In this lesson, we will learn how to use the theorems of intersecting chords, secants, or tangents and secants to find missing lengths in a circle.

Students will be able to

determine unknown lengths given a pair of intersecting chords inside a circle,
determine unknown lengths given a pair of intersecting secants,
determine unknown lengths given an intersecting secant and tangent,
determine whether three or four points that define two intersecting line segments can be points on a circle given the lengths of their parts,
solve real-life problems using properties of special segments in circles.