K,L K, L\,K,L and M M\,M are points on the circumference of a circle, centre CCC. KCM KCM\,KCM is a diameter of the circle.
Draw on this
Prove that angle KLM KLM\,KLM is 90∘ 90^\circ\,90∘
You must not use any circle theorems in your proof.
19 exam-style questions on AQA GCSE Maths Proof of the Circle Theorems. Each one has a worked solution and a mark scheme showing where the marks go.