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Advent calendar 2022
1 December
All 2022 advent puzzles
~
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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?
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The only way this is possible is if the rectangle is this square:
The area of this square is
162
.
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3d shapes
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circles
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graphs
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integers
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star numbers
xor
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colouring
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area
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routes
chocolate
division
dominos
ave
sequences
regular shapes
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consecutive numbers
lines
differentiation
quadrilaterals
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square numbers
proportion
unit fractions
games
tournaments
indices
tiling
advent
logic
neighbours
time
christmas
doubling
medians
crosswords
chalkdust crossnumber
expansions
factorials
prime factors
lists
digital clocks
polynomials
even numbers
menace
geometry
folding tube maps
balancing
cubics
taxicab geometry
mean
floors
products
rugby
hexagons
multiplaction squares
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people maths
number
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