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