**CBSE Class 10 Maths Revised Syllabus for 2020-21**

Maths is one of the most crucial subjects for a student who wishes to pursue a career in engineering and other related fields.**Class 10 Maths Revised Syllabus**

**Contents**hide

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CBSE Class 10 Maths Notes | |

Chapter 1 – Real Numbers | Chapter 2 – Polynomials |

Chapter 3 – Pair of Linear Equations in Two Variables | Chapter 4 – Quadratic Equations |

Chapter 5 – Arithmetic Progressions | Chapter 6 – Triangles |

Chapter 7 – Coordinate Geometry | Chapter 8 – Introduction to Trigonometry |

Chapter 9 – Some Applications of Trigonometry | Chapter 10 – Circles |

Chapter 11 – Constructions | Chapter 12 – Areas Related to Circles |

Chapter 13 – Surface Areas and Volumes | Chapter 14 – Statistics |

Chapter 15 – Probability |

**Chapter 1 – Real Numbers**

**Real numbers** are simply the combination of rational and irrational numbers, in the number system. In general, all the arithmetic operations can be performed on these numbers and they can be represented in the number line, also. At the same time, the **imaginary numbers** are the un-real numbers, which cannot be expressed in the number line and is commonly used to represent a **complex number**.

**Chapter 2 – Polynomials**

Polynomials for class 10 concepts are given in detail. Go through this chapter to learn the concept of polynomials such as expressions, degrees, types, graphical representation and so on.

**Chapter 3 – Pair of Linear Equations in Two Variables**

**Linear equations** are equations of the first order. These equations are defined for lines in the coordinate system. An equation for a straight line is called a linear equation. The general representation of the straight-line equation is y=mx+b, where m is the slope of the line and b is the y-intercept.

**Linear equations** are those equations that are of the first order. These equations are defined for lines in the coordinate system.

Linear equations are also first-degree equations as it has the highest exponent of variables as 1.

**Chapter 4 – Quadratic Equations**

**Quadratic equations** are the polynomial equations of degree 2 in one variable of type f(x) = ax^{2} + bx + c where a, b, c, ∈ R and a ≠ 0. It is the general form of a quadratic equation where ‘a’ is called the leading coefficient and ‘c’ is called the absolute term of f (x). The values of x satisfying the quadratic equation are the roots of the quadratic equation (α,β).

**Chapter 5 – Arithmetic Progressions**

An arithmetic progression (A.P) is a progression in which the **difference** between two **consecutive** terms is constant.

Example: 2, 5, 8, 11, 14…. is an arithmetic progression.

**Chapter 6 – Triangles**

A triangle can be defined as a polygon which has three angles and three sides. The interior angles of a triangle sum up to 180 degrees and the exterior angles sum up to 360 degrees. Depending upon the angle and its length, a triangle can be categorized in the following types-

- Scalene Triangle – All the three sides of the triangle are of different measure
- Isosceles Triangle – Any two sides of the triangle are of equal length
- Equilateral Triangle – All the three sides of a triangle are equal and each angle measures 60 degrees
- Acute angled Triangle – All the angles are smaller than 90 degrees
- Right angle Triangle – Anyone of the three angles is equal to 90 degrees
- Obtuse-angled Triangle – One of the angles is greater than 90 degrees

**Chapter 7 – Coordinate Geometry**

**Coordinate Geometry** is considered to be one of the most interesting concepts of mathematics. Coordinate Geometry (or the analytic geometry) describes the link between geometry and algebra through graphs involving curves and lines. It provides geometric aspects in Algebra and enables them to solve geometric problems. It is a part of geometry where the position of points on the plane is described using an ordered pair of numbers. Here, the concepts of coordinate geometry (also known as Cartesian geometry) are explained along with its formulas and their derivations.

**Chapter 8 – Introduction to Trigonometry**

In the ΔABC right-angled at B, BC is the side opposite to ∠A, AC is the hypotenuse and AB is the side adjacent to ∠A.

**Chapter 9 – Some Applications of Trigonometry**

**Line of sight**is the line drawn from the eye of the observer to the point on the object viewed by the observer.**Horizontal level**is the horizontal line through the eye of the observer.- The
**angle of elevation**is relevant for objects above horizontal level. - The
**angle of depression**is relevant for objects below horizontal level.

**Chapter 10 – Circles**

In Maths or Geometry, a **circle** is a special kind of ellipse in which the eccentricity is zero and the two foci are coincident. A circle is also termed as the locus of the points drawn at an equidistant from the centre. The distance from the centre of the circle to the outer line is its radius. Diameter is the line which divides the circle into two equal parts and is also equal to twice the radius.

A circle is a basic 2D shape which is measured in terms of its radius. The **circles** divide the plane into two regions such as interior and exterior regions. It is similar to the type of line segment. Imagine that the line segment is bent around till its ends join. Arrange the loop until it is precisely circular.

**Chapter 11 – Constructions**

In this chapter, we will discuss how to construct the division of the line segment, constructions of triangles using scale factor, construction of tangents to a circle with two different cases are discussed here in detail. Go through this chapter, to learn the construction procedure.

**Chapter 12 – Areas Related to Circles**

**Area of a circle** is the region occupied by the circle in a two-dimensional plane. It can be determined easily using a formula, A = **πr ^{2}**, where r is the radius of the circle. This area formula is useful for measuring the space occupied by a circular field or a plot. Suppose, if you have the plot to fence it, then the area formula will help you to check how much fencing is required. Or suppose if you have to buy a tablecloth, then how much portion of cloth is needed to cover it completely.

**Chapter 13 – Surface Areas and Volumes**

The concept of surface area and volume for class 10 is provided here. In this chapter, we are going to discuss the surface area and volume for different solid shapes such as the cube, cuboid, cone, cylinder, and so on. The surface area can be generally classified into Lateral Surface Area (LSA), Total Surface Area (TSA), and Curved Surface Area (CSA).

**Chapter 14 – Statistics**

Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. In other words, it is a mathematical discipline to collect, summarize data.

According to **Merriam-Webster dictionary**, statistics is defined as “classified facts representing the conditions of a people in a state – especially the facts that can be stated in numbers or any other tabular or classified arrangement”.

According to statistician **Sir Arthur Lyon Bowley, **statistics is defined as “Numerical statements of facts in any department of inquiry placed in relation to each other”.

**Chapter 15 – Probability**

The branch of mathematics that measures the uncertainty of the occurrence of an event using numbers is called probability. The chance that an event will or will not occur is expressed on a scale ranging from 0-1.

It can also be represented as a percentage, where 0% denotes an impossible event and 100 % implies a certain event.

**CBSE Notes for Class 10 Maths Free Download for All Chapters**

**Download PDF of NCERT Solutions for Class 10 Maths**

CBSE Class 10 Maths Study Notes | NCERT Solutions Download Class 10 |

Class 10 Maths Revision Notes for Real Numbers of Chapter 1 | NCERT Solutions Class 10 Maths Chapter 1 Real Numbers |

Class 10 Maths Revision Notes for Polynomials of Chapter 2 | NCERT Solutions Class 10 Maths Chapter 2 Polynomials |

Class 10 Maths Revision Notes for Pair of Linear Equations in two variables of Chapter 3 | NCERT Solutions Class 10 Maths Chapter 3 Pair of Linear Equations in two variables |

Class 10 Maths Revision Notes for Quadratic Equations of Chapter 4 | NCERT Solutions Class 10 Maths Chapter 4 Quadratic Equations |

Class 10 Maths Revision Notes for Arithmetic Progression of Chapter 5 | NCERT Solutions Class 10 Maths Chapter 5 Arithmetic Progression |

Class 10 Maths Revision Notes for Triangles of Chapter 6 | NCERT Solutions Class 10 Maths Chapter 6 Triangles |

Class 10 Maths Revision Notes for Coordinate Geometry of Chapter 7 | NCERT Solutions Class 10 Maths Chapter 7 Coordinate Geometry |

Class 10 Maths Revision Notes for Introduction of Trigonometry of Chapter 8 | NCERT Solutions Class 10 Maths Chapter 8 Introduction of Trigonometry |

Class 10 Maths Revision Notes for Some Application of Trigonometry of Chapter 9 | NCERT Solutions Class 10 Maths Chapter 9 Some Application of Trigonometry |

Class 10 Maths Revision Notes for Circles of Chapter 10 | NCERT Solutions Class 10 Maths Chapter 10 Circles |

Class 10 Maths Revision Notes for Constructions of Chapter 11 | NCERT Solutions Class 10 Maths Chapter 11 Constructions |

Class 10 Maths Revision Notes for Areas Related to Circles of Chapter 12 | NCERT Solutions Class 10 Maths Chapter 12 Areas Related to Circles |

Class 10 Maths Revision Notes for Surface Areas and Volumes of Chapter 13 | NCERT Solutions Class 10 Maths Chapter 13 Surface Areas and Volumes |

Class 10 Maths Revision Notes for Statistics of Chapter 14 | NCERT Solutions Class 10 Maths Chapter 14 Statistics |

Class 10 Maths Revision Notes for Probability of Chapter 15 | NCERT Solutions Class 10 Maths Chapter 15 Probability |

**CBSE Class 10 Syllabus and deleted portion for 2020-2021**

**Check subject-wise details of the deducted portion of CBSE Class 9 syllabus from the following links:**

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AI Olympiad | International Artificial Intelligence Olympiad 2020-21 |

Coding Olympiad | International Coding Olympiad 2020-21 |

IMO | International Maths Olympiad 2020-21 |

ISO | International Science Olympiad 2020-21 |

KVPY | Kishore Vaigyanik Protsahan Yojana |

Artificial Intelligence Olympiad | International Artificial Intelligence Olympiad |

Maths Olympiad | International Maths Olympiad |

Science Olympiad | International Science Olympiad |

Coding Olympiad | International Coding Olympiad |

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