Below is an interactive version of the diagram 'Powered By GeoGebra'. Drag the points to see how the diagram responds.
Main Circle Theorems page.
When you think that the circle theorems are understood head for the Circle Theorems Exercise.


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Recently UpdatedRatioA self marking exercise on using ratio notation, reducing a ratio to its simplest form and dividing a given quantity into a number of parts in proportion to a given ratio. So far this activity has been accessed 59709 times and 23055 Transum Trophies have been awarded for completing it. 
