Properties of Lines and Angles

In this section, we will learn about some general properties of lines and angles:

Properties of Lines

There are the following properties of line

  • Line has only one dimension i.e. length. It does not have breadth and height.
  • A line has infinite points on it.
  • Three points lying on a line are called collinear points

Properties of Angles

There are the following properties of angles

  • Angles tell about how much a person has rotated from his position.
  • Angles are formed when two lines meet and they are called arms of the angle.

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Lines and Angles

Lines and Angles are the basic terms used in the Geometry. They provide a base for understanding all the concepts of geometry. We define a line as a 1-D figure which can be extended to infinity in opposite directions, whereas an angle is defined as the opening created by joining two or more lines. An angle is measured in degrees or in radians depending on the concept of the problem.

All the geometrical figures have lines and angles and having an understanding of them helps us to better understand the world of Geometry. In this article, we will learn about lines, angles, their types, properties, and others in detail.

Table of Content

  • Definition of Lines and Angles
  • What are Lines?
  • Types of Lines
  • What are Angles?
  • Types of  Angles
  • Theorems Related to Lines and Angles
  • Properties of Lines and Angles

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Definition of Lines and Angles

We already know that lines and angles are the base shape of geometry and the knowledge of these helps us to better understand the concept of geometry. The basic definition of lines and angles is that the lines are 1-D figures that can be extended infinitely in the opposite direction, whereas an Angle is defined as the degree of mouth open when two lines intersect. If the wide space between the two intersecting lines is more then the angle between them is more....

What are Lines?

Line is defined as a one-dimensional figure that can be extended infinitely. It can extend in both directions and the length of a line is infinite. We can also define a line as the collection of infinitely many points that join together to form a continuous figure....

Types of Lines

We can classify the lines on the basis of their endpoint and the starting point as,...

What are Angles?

When the end points of two rays meet at a common point the figure so formed is called the angle. An angle is measured either in degrees or in radians and we can easily convert a degree to radian. We use ∠ it to represent an angle....

Types of  Angles

There are various types of lines and angles in geometry based on the measurements and different scenarios. Let us learn here all those lines and angles along with their definitions....

Theorems Related to Lines and Angles

There are various theorems related to lines and angles, some of these are:...

Properties of Lines and Angles

In this section, we will learn about some general properties of lines and angles:...

Examples on Lines and Angles

Example 1: Find the reflex angle of ∠x, if the value of ∠x is 75 degrees....

FAQs on Lines and Angles

What are Lines in Geometry?...

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