Скачать или смотреть Sum of exterior angles of Concave Polygons - example

❖ In this video, we go through an example that shows the sum of the exterior angles of a concave polygon is always 360°, no matter how many sides it has.

Using simple visuals and step-by-step reasoning, we explore why this property still holds true for a concave hexagon polygon, even when one of the exterior angles is negative due to a reflex interior angle.

Note: A reflex angle is any angle greater than 180°.

🎯 Concepts Covered in this video:
✔ What is a concave polygon?
✔ What is an exterior angle?
✔ How exterior angles are formed in concave polygons
✔ Why the sum of the exterior angles of a concave polygon is always 360°
✔ Why one of the exterior angles is negative and how the total still adds up to 360°
✔ Note: This rule holds for any polygon, not just concave ones

🎯 We explore in this video:
🔹 How to turn at each vertex of a concave polygon
🔹 Why the total turn still equals a full circle
🔹 A visual explanation showing that the sum of exterior angles is always 360°, even with a negative angle

0:00 ❖ Introduction
0:39 – Concave Polygon Test
1:48 – Concave polygon definition
2:08 – Computing the sum of the exterior angles
11:37 – Visual Illustration
13:06 – Conclusion

✅ This video is perfect for students who want a clear and visual example of this key geometry concept. Whether you're studying for a test or reviewing fundamentals, this example will help you understand and remember why the sum of exterior angles is always 360° even for concave shapes.

🎥 Watch more triangle geometry videos in the Geometry - Triangles, Polygons & Circles Playlist.

The link to Geometry - Triangles, Polygons & Circles Playlist:
   • Geometry - Triangles, Polygons & Circles  

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