The arc length can be found as $\dfrac{\theta}{360} \times 2 \pi r$

Not quite! Remember to use the formula $\dfrac{\theta}{360} \times 2 \pi r$

We can divide circles up into sectors, and find out information about them using some of the formulae we have learned.

Arc Length

Circle Theorems: Angle in a semi-circle

Circle Theorems: Angle at the centre

Circle Theorems: Cyclic Quadrilateral

Circle Theorems: Same Segment

Circle Theorems: Alternate Segment

Area of Circles

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For each area there are several explanatory videos that cleverly go through the rules and examples. In addition, there is a function that gives the child tips if he gets stuck on a task.