OCR GCSE Mathematics · J560
Specification 8.05b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
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GCSE Mathematics · key term
An angle formed at the centre of a circle by two radii.
Used by OCR
Specification 8.05b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Use the central angle in the sector opposite the angle at the circumference. This may be the reflex angle at the centre, not the smaller angle shown.
Do not merely write “circle theorem”. State the result used: “the angle at the centre is twice the angle at the circumference, subtended by the same arc”.
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