We may be asked to find different values within a circle, such as an angle or a chord length. We can use all our existing mathematical knowledge, including the properties of triangles and quadrilaterals, Pythagoras' theorem, as well as congruency proofs to find certain these values.
Now let's look at how we can use these geometrical principles by looking at some examples.
$C$C is the centre of the circle. Calculate $x$x, giving a reason related to the properties in a circle for your answer.
What is the value of $x$x? Give reasons.
Calculate $x$x, the length of a chord in the circle with centre $O$O. In your answer, give reasons related to the properties in a circle.
Deduce and apply the angle properties related to circles
Apply geometric reasoning in solving problems