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Advent calendar 2016

17 December

The number of degrees in one internal angle of a regular polygon with 360 sides.

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Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

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

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