What are Parallel lines and Transversals?

What are Parallel lines and Transversals? Parallel lines: Two lines l and m are said to be parallel if (i) they lie in the same plane (ii) they do not intersect when produced indefinitely in either direction and we write l || m (which is read as ‘l is parallel to m‘) l || m … Read more

Undefined Terms Point, Line and Plane

Undefined Terms Point, Line and Plane Undefined Terms and Intuitive Concepts of Geometry Undefined terms: In geometry, definitions are formed using known words or terms to describe a new word. There are three words in geometry that are not formally defined. These three undefined terms are point, line and plane. Point (an undefined term): In … Read more

Pairs of Lines

Pairs Of Lines There are four pairs of lines: Intersecting lines Parallel lines Skew lines Perpendicular lines If we draw two lines in a plane surface, they will either intersect each other at a point or never meet each other at all. Intersecting lines In figure, lines AB and CD intersect each other at a … Read more