The proof engine
The proof engine
Most circle theorem proofs start the same way: draw the centre OOO and join it to points on the circumference. Equal radii create isosceles triangles, and isosceles triangles create equal base angles.
The proof engine
The proof engine
Most circle theorem proofs start the same way: draw the centre OOO and join it to points on the circumference. Equal radii create isosceles triangles, and isosceles triangles create equal base angles.
Step-by-step lessons covering AQA GCSE Maths Proof of the Circle Theorems for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.