Introduction to Angles

Introduction to angles:

Point:

A point has position but no dimensions, no length, no breadth and no height. Line">

Line

A line has one dimension i.e., length only. It can be extended in both directions indefinitely.

or 'l' is a line
Line-segment">

Line segment

A line segment has fixed length, it has two end points.
Ray">

Ray

A ray can be extended in one direction only. Its other end is a fixed point.
A-plane">

A plane

A plane has length and breadth. It has two dimensions. Any flat surface is a plane.
In our study, we deal with figures drawn on plane surfaces.Axiom">

Axiom

Axiom is a statement that is accepted as true. It does not require any proof.
Theorem">

Theorem

Theorem is a statement that is accepted as true only after proving that it is a consequence of the axioms.