Explains the proof that states that if the sum of a pair of opposite angles of a quadrilateral is 180 degrees, then the quadrilateral is cyclic

Lesson Outcomes

• At the end of this lesson, the student will be able to:
• Define quadrilateral, cyclic quadrilateral
• Understand the proof which states that if the sum of a pair of opposite angles of a quadrilateral is 180°, then the quadrilateral is cyclic