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.
Many people think that an angle is some kind of. slanted line. But in geometry an angle is made up of two rays that. have the same beginning point. That point is called the vertex and the two rays are called the sides. of the angle. To name an angle, we use three points, listing the vertex in the middle. This is angle DEF or â DEF. We can use the symbol â  for angle. 1. Write if each figure is a line, ray, line segment, or an angle, and name it.