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 geometry, a point has no … [Read more...] about Undefined Terms Point, Line and Plane
Skew lines
Pairs of Lines
Pairs Of Lines There are four pairs of lines:Intersecting lines Parallel lines Skew lines Perpendicular linesIf 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 point (O), such lines are called intersecting … [Read more...] about Pairs of Lines