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


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


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


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