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This video looks at how we define and can show where triangles are similar. It looks at finding the ratio of sides and how we can use this to find missing side lengths for similar triangles.

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This lesson takes the previous video and the ideas of similar triangles and show you how to apply the understanding to prove to an examiner why triangles are similar. There are a set of rules to follow which this video aims to show you how to use!
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These are the videos which are available in each chapter. You will notice that some are free and some are for subscribers only. Making and hosting these videos costs a little bit of money. To help pay for the hosting fees I have no choice but to hide some of the videos and make them for subscribers only.