Basic Concepts in Geometry

Introduction

Look around you. The edge of a table, the beam of a torch, railway tracks, and even a dot on a map can help us understand geometry.Geometry is a branch of mathematics that deals with shapes, sizes, positions, and the relationships between different objects. In this chapter, we will learn about the basic concepts of geometry:
1. Point
2. Line Segment
3. Ray
4. Line
5. Parallel Lines
These concepts form the foundation for learning geometry.

Chapter Overview

A geometric figure begins with a point.
A point can form a line segment. A line segment can help us understand rays and lines. When two lines remain the same distance apart and never meet, they are called parallel lines.
Learning Path:
1. Point
2. Line Segment
3. Ray
4. Line
5. Parallel Lines

1. Point

A point shows an exact position or location.
A point has no length, width, or thickness. It only indicates a position.
A point is usually represented by a small dot and named using a capital letter.

A point can be used to represent:
A city marked on a map.
A location pin on a mobile phone map.
A star in the night sky.

1. Line Segment

Suppose we join two points using a straight path. The part of the line between the two points is called a line segment. A line segment has two endpoints and a fixed length.