❖ Learn how to find missing interior and exterior angles of a concave polygons using simple rules and a clear example!

In this lesson, we walk through a concave polygon which is an irregular polygon.

For this concave polygon, we find:

✔️ the missing interior angle \(x\)

✔️ the missing exterior angle \(y\)

🎯 Key concepts covered:

– What is a concave polygon?

– Sum of interior angles \(= (n – 2) × 180^\circ\)

– Sum of exterior angles = \(360^\circ – Exterior Angle = 180^\circ –\) Interior Angle

You’ll see two different ways to solve the example, so you can clearly understand both approaches. 🔍

Learn how the exterior angles of any polygon always add up to \(360^\circ\), just like a full circle. It’s a simple but powerful idea that works for every polygon!

🎯 Whether you’re a student, teacher, or just love math this lesson is a helpful guide to mastering interior & exterior angles!