mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2022

1 December

One of the vertices of a rectangle is at the point \((9, 0)\). The \(x\)-axis and \(y\)-axis are both lines of symmetry of the rectangle.
What is the area of the rectangle?

Show answer

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

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

Archive

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