mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
subscribe
Loading image...
Puzzles
Guess the diagonal
Source:
My Best Mathematical and Logic Puzzles
by Martin Gardner
Calculate the length of the diagonal CG.
Show answer & extension
Hide answer & extension
CG is equal to AF as they are both diagonals in a rectangle.
AF is a radius of the triangle, so AF = 10.
Therefore CG = 10.
Extension
Calculate the lengths of CI and CJ.
Calculate the lengths of HG.
Tags:
geometry
,
2d shapes
If you enjoyed this puzzle, check out
Sunday Afternoon Maths II
,
puzzles about
geometry
, or
a random puzzle
.
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
complex numbers
cards
geometry
ellipses
chalkdust crossnumber
perimeter
polygons
median
axes
circles
factors
ave
pentagons
clocks
trigonometry
people maths
calculus
digital clocks
combinatorics
2d shapes
geometric mean
consecutive integers
doubling
dice
remainders
crossnumbers
mean
chocolate
numbers
menace
folding tube maps
spheres
area
proportion
sequences
squares
games
crossnumber
irreducible numbers
dates
colouring
indices
dodecagons
cryptic clues
star numbers
products
percentages
speed
the only crossnumber
money
probabilty
tangents
gerrymandering
partitions
digital products
range
arrows
decahedra
integration
sums
balancing
advent
coins
christmas
even numbers
number
hexagons
differentiation
square numbers
taxicab geometry
sets
albgebra
addition
time
expansions
triangles
polynomials
prime numbers
graphs
sport
quadratics
unit fractions
bases
digits
averages
factorials
perfect numbers
functions
pascal's triangle
lines
angles
floors
geometric means
tiling
parabolas
volume
scales
division
binary
multiplication
algebra
logic
fractions
dominos
planes
palindromes
wordplay
odd numbers
routes
matrices
grids
consecutive numbers
rectangles
3d shapes
crosswords
regular shapes
cryptic crossnumbers
determinants
sum to infinity
shapes
triangle numbers
coordinates
shape
symmetry
means
integers
cubics
quadrilaterals
multiples
tournaments
probability
books
cube numbers
surds
chess
elections
rugby
square roots
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
sport
quadratics
dates
rugby
products
algebra
decahedra
games
dominos
volume
circles
cryptic clues
functions
dice
consecutive numbers
bases
money
menace
balancing
odd numbers
irreducible numbers
taxicab geometry
palindromes
matrices
median
surds
2d shapes
axes
time
triangle numbers
cube numbers
trigonometry
crosswords
digits
ave
perfect numbers
indices
mean
unit fractions
rectangles
colouring
chalkdust crossnumber
sum to infinity
parabolas
chocolate
fractions
coins
tangents
prime numbers
graphs
multiplication
determinants
cubics
logic
sums
regular shapes
symmetry
elections
probabilty
remainders
christmas
percentages
means
digital products
multiples
division
chess
range
routes
sequences
geometric mean
tournaments
scales
angles
factorials
gerrymandering
advent
speed
probability
proportion
polynomials
spheres
the only crossnumber
ellipses
lines
shape
pascal's triangle
shapes
square roots
addition
quadrilaterals
people maths
squares
arrows
3d shapes
grids
partitions
integers
planes
doubling
factors
square numbers
binary
triangles
perimeter
clocks
crossnumber
folding tube maps
dodecagons
even numbers
wordplay
sets
hexagons
cards
geometric means
digital clocks
differentiation
polygons
area
books
combinatorics
tiling
coordinates
numbers
complex numbers
pentagons
star numbers
averages
consecutive integers
albgebra
floors
expansions
crossnumbers
geometry
calculus
number
integration
cryptic crossnumbers
© Matthew Scroggs 2012–2024