Here’s a few videos on finding a missing angle, that I hope might be useful. They are becoming a little more popular on GCSE mathematics as you need to demonstrate a clear, logical method. The questions aren’t always that straightforward and here’s some practice questions to try, before watching the videos:

**Download the finding the missing angle quick test questions here.**

### Top Tips!

- finding a missing angle questions usually involve triangles, regular polygons or circles
- it’s usually a two / three step process and you might need to remember:
- 180º on a straight line
- 360º at a point (or a circle)
- circle theorems – particularly angles at the centre are double the angle at the circumference
- alternate, corresponding angle rules
- try to work through logically and add additional sketches as required
- show any calculations

- check whether your answer makes sense!

If you’d like to ask for any more detail, or you’re not sure about anything, please do ask a question in the comments section.

All best with your studies

Watch on YouTube

How to find the missing angle – decagon question GCSE level 4

How to find the missing angle in a circle – GCSE question level 4

How to calculate a missing angle – hexagon square GCSE level 4

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