# Puzzles

## Archive

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#### Sunday Afternoon Maths LXVII

Coloured weightsNot Roman numerals

#### Advent calendar 2018

#### Sunday Afternoon Maths LXVI

Cryptic crossnumber #2#### Sunday Afternoon Maths LXV

Cryptic crossnumber #1Breaking Chocolate

Square and cube endings

List of all puzzles

## Tags

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

In the diagram, B, A, C, D, E, F, G, H, I, J, K and L are the vertices of a regular dodecagon and B, A, M, N, O and P are the vertices of a regular hexagon.

Show that A, M and E lie on a straight line.