Quadrilaterals and other polygons
Essential Mathematics Year 9
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  Learning objectives
  Recap of past learning
  Polygon: A missing parrot!!!!
  Types of polygons: Convex and non-convex
  Regular polygons
  Finding the sum of the interior angles of any polygon
  Formula for sum of interior angles
  Sum of exterior angles of a polygon
  Properties of quadrilaterals
  Example 1: Finding angles in quadrilaterals
  Example 2: Finding angles in quadrilaterals
  Example 3: Finding angles in quadrilaterals
  Example 4: Finding angles in polygons
  Example 5: Finding angles in polygons
  Final words and summary

This video is another in the series relating to Geometry for the Year 9 course. The concepts held within are so important as they come up time and time again. Looking at Quadrilaterals and other polygons, I show you how to find the interior and exterior angles of polygons, and how some of the more interesting ones work. Do you want to know about their properties? Well, I have a section on that too. Want to have some humour and laugh whilst you're learning, well I can do that too.

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