Square and two types of rectangles
111609
Each $2\times 5$ rectangle contains $1\times 3$ rectangle
58171
Two problems about Squarefree numbers
146050
Triangle - Rectangle Intersection in 2D
67514
Formal Proof that area of a rectangle is $ab$
61344
How to relate areas of circle, square, rectangle and triangle if they have same perimeter??
82327
Tiling a $3 \times 2n$ rectangle with dominoes
74927
Set the same height of the rectangle with different splits in tikz
95488
How to determine collision direction between two rectangles?
114258
Stuff which squares to $-1$ in the quaternions, thinking geometrically.
103190
Algorithm to get the maximum size of n squares that fit into a rectangle with a given width and height
127566
$2AB$ is a perfect square and $A+B$ is not a perfect square
62518
How many rectangles or triangles.
84360
random placement of rectangles with no overlaps
16868
Join rectangles by labeled arrows
114863
Representing a given number as the sum of two squares.
101642
Counting in a rectangular grid with obstacles
89329
If a and b are relatively prime and ab is a square, then a and b are squares.