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

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

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

Archive

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