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