GEOMETRY- LINES AND ANGLES

GEOMETRY- LINES AND ANGLES
Different Points And Lines
Coplanar points: 
    Points are coplanar if and only if they lie in the same plane.The points which are not on the same plane are called non coplanar points.A plane can be determined by three non - collinear points.
Coplanar lines: The lines on the same plane are called coplanar lines.
Example:     Lines drawn on a paper.
Non coplanar lines:     
    The lines which are not in the same plane are called non coplanar lines.
Intersecting lines: 
    If two lines are having a common point. Then they are said to be intersecting lines.
Concurrent lines: 
    If three or more lines are having the same common point, then those lines are called concurrent lines.
Coincident lines: Two lines having infinite common points are called coincident lines.
    Example:       are called coincident lines