chessboard
checker
root mean square
triangle
Greco-Latin square
square
numberwork
pane
alphamagic square
bimagic square
girih tile
squaroid
rank
multiformula
figurework
cube
automorphic number
regular hexahedron
mean square
quadrature
polyare
geomagic square
set theory
Möbius function
lattice theory
hexomino
squareness
rounding error
square pyramid
broken diagonal
inverse
perfect square
prime reciprocal magic square
crotchet
multialgebra
Truchet tile
geometrics
irreducible
non-hypotenuse number
cubic
oblong number
quadratic function
spherical trigonometry
onto function
surjection
magic cube
pandiagonal magic square
arithmetic operation
file
Lagrange's interpolation formula