The term is dated to the 19th century by the American Heritage Dictionary of Idioms and is first recorded in 1918, according to the Online Etymology Dictionary. Suffering from cabin fever is similar to going stir crazy, a term that originates from a mid-19th century slang term, stir, which meant prison. Stir crazy was typically used to describe the behavior exhibited by inmates in prison suffering from the effects of a long incarceration.
A quadrilateral is a polygon that has exactly four sides. (This also means that a quadrilateral has exactly four vertices, and exactly four angles.). A quadrilateral is a polygon that has exactly four sides. (This also means that a quadrilateral has exactly four vertices, and exactly four angles.). Some examples of quadrilaterals: Discussions of 2-D shapes sometimes refer only to the boundary (the line segments that form the edges of the figure) or to the interior as well.
â¢ a trapezium (UK) or a trapezoid (US) is a quadrilateral. with at least one pair of parallel sides. â¢ Parallel sides are called bases. â¢ Non-parallel sides are called legs or lateral sides. See definition notes below examples.