Angles in a Regular Polygon

You can find the Exterior angle in a regular polygon by using Ratio Grids if you want to.

notes-sheet-angles-in-a-regular-polygon Download

Video Example – finding the number of sides of a polygon given the exterior angle

Do you know your Circle Theorems? (Printable Poster)

Click to download a pdf of the poster: Do You Know Your Circle Theorems

Recommending mathsbot.com

I am grateful to Mr. Holding who teaches locally for this link. So simple! Lots of GCSE questions presented one at a time. A couple of examples are reproduced below.

http://mathsbot.com/gcseQuestions http://mathsbot.com/gcseQuestions

The Proof Questions on this site are invaluable – the best collection I have seen.

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Parallel lines activity

Mathwarehouse.com is *very* buggy website but oday one of my students did the parallel line problems and thoroughly enjoyed them.