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