mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

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.

Show answer & extension

If you enjoyed this puzzle, check out Sunday Afternoon Maths XXXIX,
puzzles about angles, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022

Advent calendar 2021


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2025