Showing posts with label Rays. Show all posts
Showing posts with label Rays. Show all posts

Monday, September 3, 2012

Opposite Rays Geometry

Introduction to opposite rays:

In geometry ray is a line but it has starting point with no ending point. Two opposite rays join at a single vertex and forms straight angles.  Straight angles are one of the angles in mathematical geometry.Straight angle is a straight line angle it measures 180 degree angle. Therefore we can say that an angle formed by opposite rays is the straight angle.  In this article we are going to learn about how two opposite rays make a straight angle in geometry.

Explanation about Opposite Rays in Geometry

Ray:                      

Ray is the important concept in mathematical geometry. A ray is the one of the part of the line. All angles are lies between two rays. Generally a ray as a starting point but is has no ending point it ends up to infinity level.  Starting point of the ray is mentioned by the dot and then ending point of the ray is mentioned by the arrow.

Opposite rays:
Two rays that share the starting point and it goes up to infinity level on both directions is known as opposite rays.  It looks like a straight line so it is forms an straight angle.


The above diagram AB and BC are two opposite rays they share a common point B and it forms 180 degree straight angle.  Here B is known as the vertex of the straight angle 180 degree.



Description about Pictures and Points of the Opposite Rays

Different pictures of the opposite rays:


Collinear points:

If the point are in the straight line that has been similar to two opposite then that points are called as the collinear points. Simply known as a set of points in the straight line then those points is called as the collinear points.  In the above diagram 1 A, B and then C are the collinear points because they lie in the same straight line and formed by two opposite rays.