Geometry
Essential Mathematics Year 9
Welcome
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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