This math topic focuses on calculating angles formed by two secants intersecting a circle. It delves into the geometrical properties of circles related to angles and secants. Each question presents a visual of a circle with secants and requires identifying the value of a marked angle, X. A variety of options are provided for the angles, testing understanding of circular geometry rules. This is a specialized part of a broader unit on circular geometry, aimed at developing proficiency in identifying and solving geometric problems involving circles.