Mensuration and Geometry
Areas and perimeters of triangles, quadrilaterals, polygons and circles (sectors, arcs, rings); surface areas and volumes of cubes, cuboids, cylinders, cones, spheres and hemispheres; recasting and rolling problems; scale factors for similar figures; triangle facts (Heron, special triangles, inradius and circumradius, inequality); circle theorems (chords, tangents, angles); polygon angle sums and diagonals; coordinate geometry (distance, midpoint, section point, slope, area by coordinates, centroid).