line and angle

Point :- A point is a mark of location . It is represented by a dot made using by a sharp tip of the pencil on the paper .It has no length , breadth or thickness. It has just a position and only its location can be determined. 

Line Segment:- A line segment is a state path connecting two points it has a definite length but not breath and thickness it is the shortest distance between the two points.
RAY:- A ray is a line segment which has only one end point and can be extended endlessly in the other direction. Clearly a ray has no definite length , breadth and thickness.
Line:- A line is a line segment which can be extended endlessly on both the sides. A line “L” had length only it has no breath and thickness.
Plane:- A flat and smooth surface that extends infinitely in the all the directions is called plane. It has length and breadth but no thickness.
 Relationship between points and lines in a plane 
1. Infinite number of lines can be drawn passing through a given points in a plane.
2. There is exactly one line passing through two distinct point in a plane. 
  Pair of line
1. Intersecting lines
2. parallel lines
3. transversal 
  Angle 
An angle is a figure formed by two rays having a common initial point.
Type of angle
1. Acute angle 
2. Right angle
3. Obtuse angle 
4. Straight angle 
5. Reflex angle 
6. Complete angle.