Karen Morrison and Nick Hamshaw Solutions for Exercise 8: Exercise 19.8

Find the angle $x$ in the following:

Find the angle $x$ in the following:

Find the angle $x$ in the following:

Find the angle $x$ in the following:

Find the angle $x$ in the following:

Prove that $CD$ is a diameter of the circle.

Given that $O$ is the centre of the circle, prove that $2x-y=90°$.

Find the unknown angle $x$.