plural rectangles
geometry
: a four-sided shape that is made up of two pairs of parallel lines and that has four right angles
especially
: a shape in which one pair of lines is longer than the other pair
squares and rectangles
Cite this Entry
“Rectangle.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/rectangle. Accessed 19 Jun. 2026.
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