For reference, violent crime includes assault, murder, robbery, and rape, while property crime includes burglary, larceny, and vehicular theft. California proved to be the safest state in the nation, taking 11 of the top 25 cities. A suburb of one of the country's most dangerous cities landed in the No. 1 spot. Read on for the 25 safest cities in America: Virginia Beach, on the Atlantic Ocean at the mouth of the Chesapeake Bay, offers residents and visitors many outdoor and water activities.Visit Virginia Beach/Facebook. Population: 445,623.
In Euclidean plane geometry, a quadrilateral is a polygon with four edges (or sides) and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon (5-sided), hexagon (6-sided) and so on.
The shapes of elementary geometry are invariably convex. Starting with the most regular quadrilateral, namely, the square, we shall define other shapes by relaxing its properties. A square is a quadrilateral with all sides equal and all angles also equal. Angles in any quadrilateral add up to 360Â°. It follows that, in a square, all angles measure 90Â°. An equiangular quadrilateral, i.e. the one with all angles equal is a rectangle. All angles of a rectangle equal 90Â°. An equilateral quadrilateral, i.e. the one with all sides equal, is a rhombus. In a square, rectangle, or rhombus, the opposite side lines are parallel.