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 Skip Navigation LinksMath Help > Geometry > Polygons and Triangles > Quadrilaterals

A rectangle is a quadrilateral with two pairs of parallel sides and four right angles.  A square is a rectangle with four equal sides.  To see where rectangles and squares fit into the world of quadrilaterals.

Contents of this section:

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Related pages in this website:

Quadrilaterals -- classification and explanation of the various types of quadrilateral 

Rectangle Perimeter -- Proof that a square has the smallest perimeter of any rectangle with a given area 


The webmaster and author of this Math Help site is Graeme McRae.