The statistical mean can also be used to interpret statistical data. Some important properties make statistical mean very useful for measuring central tendency. Since Xi - X is the distance from a given number to the average. The numbers to the left of the mean are balanced by the numbers to the right of the mean.
In review, vertical angles are angles formed by the intersection of two lines while alternate interior angles, alternate exterior angles, corresponding angles and consecutive interior angles are formed by the intersection of two lines and a transversal.
While the side lengths determine the size and stretch of the polygon, the shape of the polygon is determined by the angle measures. A polygon whose vertex angles are equal are called equiangular polygon, for example equilateral triangle is an equiangular triangle, each angle is of measure 60 degrees. Also all the regular polygons (polygons having all the sides equal)are always equiangular.