Popular Terms. Detailed listing of activities, costs, expected difficulties, and schedules that are required to achieve the objectives of the strategic plans. Because of the quick increase in number of employees the company I work for reviewed their implementation plan for evacuating the building if there is a fire.
Noun. 1. rectangle-a parallelogram with four right angles. foursquare, square - (geometry) a plane rectangle with four equal sides and four right angles; a four-sided regular polygon; you can compute the area of a square if you know the length of its sides.
The rectangle has two lines of symmetry, the perpendicular bisector of the longer sides, and the perpendicular bisector of the shorter sides. The circle has infinitely many lines of symmetry, any line going through the center. (Any diameter is a line of symmetry.) The parallelogram pictured has no lines of symmetry.