# Lesson overview:Regular interior and exterior angles (and mean of irregular)

- In this lesson, we will learn how to calculate the mean interior and exterior angles of n-sided polygons, and solve problems based on these formulae.

- In this lesson, we will learn how to calculate the mean interior and exterior angles of n-sided polygons, and solve problems based on these formulae.

In this lesson, we will learn how to calculate the mean interior and exterior angles of n-sided polygons, and solve problems based on these formulae.

## Angles in polygons:

- Interior angles in a triangle
- Categorising and defining polygons
- Building shapes from triangles (Part 1)
- Building shapes from triangles (Part 2)
- Polygons and triangles
- Generalising angles in polygons (Part 1)
- Generalising angles in polygons (Part 2)
- Finding missing angles in polygons
- Exterior angles
- Regular interior and exterior angles (and mean of irregular)
- Generalising and comparing generalisations
- Angle notation and problem solving