Download the latest CBSE Class 9 Mathematics Herons Formula Notes in PDF format. These Class 9 Mathematics revision notes are carefully designed by expert teachers to align with the 2025-26 syllabus. These notes are great daily learning and last minute exam preparation and they simplify complex topics and highlight important definitions for Class 9 students.
Chapter-wise Revision Notes for Class 9 Mathematics Chapter 10 Heron's Formula
To secure a higher rank, students should use these Class 9 Mathematics Chapter 10 Heron's Formula notes for quick learning of important concepts. These exam-oriented summaries focus on difficult topics and high-weightage sections helpful in school tests and final examinations.
Chapter 10 Heron's Formula Revision Notes for Class 9 Mathematics
CBSE Class 9 Concepts for Heron’s Formula. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations.
Chapter 12
Heron’s Formula
Chapter Notes
Top Definitions
1. The region enclosed with in a simple closed figure is called its area.
2. A plane figure bounded by four sides is a quadrilateral.
3. A quadrilateral is a cyclic quadrilateral if all its four vertices lie on the circumference of the circle.
4. Semi perimeter is half of the perimeter.
Top Concepts
1. For every triangle, the values of (s – a), (s – b), and (s – b) are positive.
2. The line segment joining the mid-point to any of the vertex divides the triangle in two parts, equal in area.
3. The diagonal of a quadrilateral divides the quadrilateral into two triangles.
4. The diagonal of a parallelogram divides the quadrilateral into two congruent triangles.
5. Area of a quadrilateral whose sides and one diagonal are given can be calculated by dividing the quadrilateral into two triangles and using Heron’s formula.
Top Formulae
1. In triangle ABC right angled at B, AB2 + BC2 = AC2
2. Area of equilateral triangle = √3/4 a 2 a sq units, where ‘a’ is the side length of an equilateral triangle.
3. Semi-perimeter of equilateral triangle =3a/2
4. Area of a triangle =1/2 × base × height
5. Area of triangle = √s(s - a)(s - b)(s - c) , S=semi perimeter =a + b + c/2
6. Area of parallelogram = base × height
7. Area of a triangle =1/2 × base × height
8. Area of parallelogram = 2 x (Area of triangle)
9. Area of cyclic quadrilateral = √s(s - a)(s - b)(s - c)(s-d) S=semi perimeter =a + b + c + d/2
10. Area of a rhombus =1/2 ´ Pr oduct of diagonals
11. Area of a trapezium =1/2 x height x (sumof parallelsides)
12. Area of a quadrilateral = 1/2 ´ diagonal x sumof perpendicular fromverticesondiagonal
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| CBSE Class 9 Mathematics Number Systems Notes Set A |
| CBSE Class 9 Mathematics Number Systems Notes Set B |
| CBSE Class 9 Mathematics Polynomials Notes Set A |
| CBSE Class 9 Mathematics Polynomials Notes Set B |
| CBSE Class 9 Mathematics Coordinate Geometry Notes Set A |
| CBSE Class 9 Mathematics Coordinate Geometry Notes Set B |
| CBSE Class 9 Mathematics Introduction To Euclids Geometry Notes |
| CBSE Class 9 Mathematics Lines And Angles Notes Set A |
| CBSE Class 9 Mathematics Lines And Angles Notes Set B |
| CBSE Class 9 Mathematics Triangles Notes Set A |
| CBSE Class 9 Mathematics Triangles Notes Set B |
| CBSE Class 9 Mathematics Quadrilaterals Notes Set A |
| CBSE Class 9 Mathematics Quadrilaterals Notes Set B |
| CBSE Class 9 Mathematics Circles Notes Set A |
| CBSE Class 9 Mathematics Circles Notes Set B |
| CBSE Class 9 Mathematics Circles Notes Set C |
| CBSE Class 9 Mathematics Herons Formula Notes |
| CBSE Class 9 Mathematics Surface Areas And Volumes Notes Set A |
| CBSE Class 9 Mathematics Surface Areas And Volumes Notes Set B |
| CBSE Class 9 Mathematics Activities and Projects |
Important Practice Resources for Class 9 Mathematics
CBSE Class 9 Mathematics Chapter 10 Heron's Formula Notes
Students can use these Revision Notes for Chapter 10 Heron's Formula to quickly understand all the main concepts. This study material has been prepared as per the latest CBSE syllabus for Class 9. Our teachers always suggest that Class 9 students read these notes regularly as they are focused on the most important topics that usually appear in school tests and final exams.
NCERT Based Chapter 10 Heron's Formula Summary
Our expert team has used the official NCERT book for Class 9 Mathematics to design these notes. These are the notes that definitely you for your current academic year. After reading the chapter summary, you should also refer to our NCERT solutions for Class 9. Always compare your understanding with our teacher prepared answers as they will help you build a very strong base in Mathematics.
Chapter 10 Heron's Formula Complete Revision and Practice
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