Alcohol Effects question 3. A âhangoverâ is perhaps the least concerning effect amongst the gamut of negative health consequences to drinking â which also includes cardiovascular damage, increased risk for depression, liver damage, and cancers.
A quadrilateral is a closed figure with four straight sides. A closed figure means there are no gaps between sides and no side extends past the end of another side. If both segments lie inside the quadrilateral, then the figure is convex.
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. Rectangle: all four angles are right angles. 2  An equivalent condition is that the diagonals bisect each other and are equal in length. 3  Informally: a box or oblong (including a square). 4  Square (regular quadrilateral): all four sides are of equal length (equilateral), and all four angles are right angles.