# Definition of Line

A line is a long, thin mark that you can draw using a pencil and paper.

In geometry, we mean more specific things by "line". A line must have the following properties:

• They are straight and do not include any curves.
• The have no breadth (thickness).
• They extend infinitely in both directions.

Lines which have two end-points (one at each end) are called line segments. Lines that have one end point, but extend infinitely in the other direction are called rays.

### Description

The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student

### Audience

Year 1 to Year 12 students

### Learning Objectives

Learn common math terms starting with letter L

Author: Subject Coach
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