Geometry & Measures — OCR GCSE MathsTopics in Geometry & Measures for OCR GCSE Maths. Choose a topic for explanations and practice.Angles & PolygonsConstructions & LociBearingsPythagoras & TrigonometrySOHCAHTOA ProblemsSine Rule & Cosine RuleCircle TheoremsArea & PerimeterArea & VolumeSurface Area of 3D ShapesCongruence & SimilarityTransformationsEnlargementsCoordinates & MidpointsVectorsPlans & ElevationsStart practice Back to OCR GCSE Maths