Angle Facts & Polygons | OCR GCSE Maths Higher | 40 Worked Examples (J560)

Angle facts and polygons for OCR GCSE (9-1) Mathematics Higher tier (J560). 40 exam-style questions with fully worked, mark-scheme-annotated solutions and clear diagrams throughout: angles at a point and on a straight line, vertically opposite angles, corresponding, alternate and co-interior angles on parallel lines, the triangle and quadrilateral angle sums, the exterior-angle-of-a-triangle theorem, interior and exterior angles of regular and irregular polygons, finding the number of sides, algebraic angle problems, fitting regular polygons around a point, tessellation, and formal reasoning proofs. Progressive Easy to Challenging difficulty. Every working line is annotated, with OCR M/A/B/SC marks folded in on the real mark-scheme lines. Built for OCR’s no-formula-sheet exam: none of these angle facts are ever printed, so the pack opens with a memorise-by-heart key-facts box. It also drills OCR’s strict reason-marking convention, that a reason mark is only awarded for a properly named fact (corresponding, alternate, co-interior) and OCR does not accept ‘F angles’, ‘Z angles’ or ‘C angles’. Calibrated against OCR J560 past papers and mark schemes, not ported from another board. Ideal for revision, homework, and 1-1 tuition.