mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Guess the diagonal

Calculate the length of the diagonal CG.

Show answer & extension

If you enjoyed this puzzle, check out Sunday Afternoon Maths II,
puzzles about 2d shapes, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2025

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2026