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2d shapes shapes division books unit fractions symmetry algebra advent multiplication rectangles prime numbers digital clocks star numbers indices chalkdust crossnumber square numbers polygons median coins grids square roots remainders people maths percentages speed perimeter crossnumbers albgebra integers menace polynomials surds dice even numbers numbers sport wordplay tangents odd numbers balancing geometric means area decahedra time multiples spheres sequences games pascal's triangle chess ave matrices dominos binary calculus factorials integration cubics geometric mean tournaments regular shapes lines christmas digits planes the only crossnumber triangle numbers floors rugby proportion circles palindromes products chocolate complex numbers quadrilaterals irreducible numbers means expansions axes taxicab geometry sums elections colouring coordinates folding tube maps differentiation gerrymandering consecutive integers combinatorics volume money scales hexagons addition graphs probability digital products consecutive numbers tiling mean sets triangles range cube numbers logic factors shape partitions crosswords determinants arrows ellipses routes angles geometry fractions squares pentagons perfect numbers dates sum to infinity bases parabolas crossnumber averages cryptic clues trigonometry doubling number quadratics probabilty functions cryptic crossnumbers dodecagons cards 3d shapes clocks