Sunday Afternoon Maths XXXVII

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