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Chapter 10 - Straight Lines

You have already studied coordinate geometry in your earlier classes. Coordinate geometry is nothing, but a blend of algebra as well as geometry and includes concepts like coordinate axes, coordinate plane, plotting of points in a plane, the distance between two points, section formulae, and more. In this chapter, you’ll continue studying coordinate geometry and learn about -a straight line. You’ll also learn about some of its interesting properties. A straight line is one of the simplest but one of the most important concepts in geometry. In NCERT Solutions for Class 11, Maths, Chapter 10, you’ll also get in-depth knowledge on how to represent the straight line algebraically, what is meant by the slope or gradient of a line, various forms of the equation of a line and distance of a point from a line.

Straight lines are indispensable in our lives. Straight-line graphs are very helpful to describe how a lot of things perform in real life. For instance, graphs related to straight-line can show us the number of vegetables sold by a grocer in a particular month, the amount of rainfall received by a city, the marks obtained by all the students in a class, and the list just goes on.

Let’s take a look at topics and sub-topics of class 11 Maths Chapter 10, Straight Lines

10.1 Introduction

10.2 Slope of a Line

10.3 Various Forms of the Equation of a Line

10.4 General Equation of a Line

10.5 Distance of a Point From a Line

In Class 11 Maths Chapter 10, you will learn – 

Section 10.2 – In this section, you’ll study what a straight line is and its scope when coordinates of any two points are given on the line. You’ll also study the conditions for parallelism and perpendicularity of lines in terms of their slopes, angle between two lines and collinearity of three points.

Section 10.3 – In this section, you’ll learn various forms of the equation of a line under various conditions such as horizontal and vertical lines, point-slope form, two-point form, slope-intercept form, intercept – form and normal form.

Section 10.4 – In this section, you’ll learn about the general equation of a line and different forms of Ax + By + C = 0 such as slope-intercept form, intercept form and normal form.

Section 10.5 – In this section, you’ll acquire knowledge about some interesting observations of the distance of a point from a line.

In this chapter, you are provided with several diagrams and examples along with their solutions for a clear understanding of Straight Lines. To know more about Class 11 Maths Chapter 10 Straight Lines, you should explore the exercises below. You can also download the Straight Lines Class 11 NCERT Solutions PDF, solved by expert Maths trainers.

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