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