Rectangle
From Encyclopedia of Mathematics
A quadrangle all angles of which are straight, i.e. $90$° (cf. Quadrangle, complete). A rectangle is a special parallelogram.
How to Cite This Entry:
Rectangle. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Rectangle&oldid=31850
Rectangle. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Rectangle&oldid=31850