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 2d shapes, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020