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.