CBSE Class 9 Maths Notes Chapter 9 Areas of Parallelograms and Triangles
Here, we have provided CBSE Class 9 Maths Notes Chapter 9. Students can view these CBSE Class 9 Maths Notes Chapter 9 before exams for better understanding of the chapter.
Neha Tanna20 May, 2024
Share
CBSE Class 9 Maths Notes Chapter 9: To give students a concise and straightforward grasp of the material, we have created notes for CBSE Class 9 Maths Notes Chapter 9. Experts in the field have created the Class 9 Chapter 9 Areas of Parallelograms and Triangles Notes PDF by us, tailoring it to meet the requirements of the learners.
The CBSE Class 9 Maths Notes Chapter 9 will assist you in going over the ideas and formulas of the Areas of Triangles and Parallelograms in great detail. An additional advantage is that the CBSE Class 9 Maths Notes Chapter 9 are easily downloadable in PDF format, allowing you to have them on hand and make revisions as needed.CBSE Class 9 Maths Notes Chapter 9 PDF
Students who want to do well on their final exams will find great value in the CBSE Class 9 Maths Notes Chapter 9. To aid students in comprehending the ideas and dispelling any doubts they may have, we have included comprehensive chapter-by-chapter notes. Chapter 9 Areas of Parallelograms and Triangles notes includes a comprehensive explanation of all the problems that are addressed in the CBSE Books that are attached. The most recent syllabus and exam pattern instructions issued by the CBSE Board are followed in the creation of these notes.CBSE Class 9 Maths Notes Chapter 9 PDF
CBSE Class 9 Maths Notes Chapter 9
Definition of Triangle
A triangle is a two-dimensional figure made up of three lines and corners.Properties of a Triangle
- The polygon with the least sides is a triangle.
- It is a two-dimensional closed figure made up of three-line segments and corners, and as such, it takes up space that is enclosed by the sides.
Area Proposition
Area of a Closed Shape
The term "planar area" refers to the area of any plane that is surrounded by a closed figure. The "area" of that figure is the measurement of this area. The numerical representation of this is employed by all units.
Properties of the Area of a Figure
The two figures are considered congruent if their sizes and shapes match. Additionally, the two figures' areas would match if they were congruent. The two figures don't need to be congruent if their areas are equal.Area of Parallelogram
-
Area of parallelogram = base × height
-
Height is perpendicular to the base.
Figures on the Same Base and Between the Same Parallels
It is presumed that the two figures are on the same base and between the same parallels if they have the same base and the vertices opposite the base are also on the line parallel to the base.Parallelograms on the Same Base and Between the Same Parallels
The area must equal the two parallelograms if they share the same base and are situated between the same parallel lines.Median of a Triangle
The median is the length of the line that connects each vertex of the triangle to the opposing side's center. The triangle has three medians, and the centroid is the point where these medians intersect. The triangle is divided into two equal parts by the middle.| CBSE Class 9 Maths Syllabus | CBSE Class 9 Science Syllabus |
| CBSE Class 9 Computer Application Syllabus | CBSE Class 9 Social Science Syllabus |
Definition of Unit Area
The unit area is the area bounded by a figure whose sides are unit length. It is a positive real number and is commonly represented in square units.Notation of Area of a Polygon
The area of a polygonal figure A is denoted by a r ( A ) . In meters, it is denoted by m square.Area Axioms
Area of a Rectangular Region
Theorem 2
Statement:
Parallelograms on the same base and between the same parallel lines are equal in area.
Corollary Statement:
Parallelograms on equal bases and between the same parallels are equal in area.
Theorem 3
Statement:
Triangles on the same base and between the same parallels are equal in area.
Theorem 4
Statement:
Triangles of equal areas, having one side of one of the triangles equal to one side of the other, have their corresponding altitudes equal.
Benefits of CBSE Class 9 Maths Notes Chapter 9
Since the principles of mathematics surround us and a lack of comprehension of them can lead to serious issues in life, mathematics is vital to our everyday existence. It's a subject where solving various numerical problems requires a lot of practice and formula understanding. Students in class 9 can now improve their ability to solve mathematical problems by practicing the problems from the CBSE Class 9 Maths Notes Chapter 9, which are available here. To help students do well on their exams, all of the explanations have been selected from the Class 9 Math NCERT textbook. Our subject matter specialists develop notes for all the exercises in the NCERT textbook according to the prescribed syllabus, so that students in Class 9 can profit from them while they prepare for their exams. Students can thus easily get a comprehensive knowledge of these concepts by reading our CBSE Class 9 Maths Notes Chapter 9 and practicing them at their own pace. To help students become more adept at solving problems, subject matter experts have clearly articulated the notes. Students can consult the study materials offered by us to gain a better understanding of the Areas of Triangles and Parallelograms.CBSE Class 9 Maths Notes Chapter 9 FAQs
What are the areas of parallelograms and triangles in maths 9th standard notes?
Area of a triangle = ½ x Base x Altitude. Area of a parallelogram = Base x Height. Triangles having the same base and equal areas lie between the same parallels. Triangles on the same base and between the same parallels are equal in area.
Which is the hardest chapter in maths class 9?
Geometry
Is triangles Class 9 difficult?
Also, under the geometry section Triangles is the toughest chapter as stated by the students of class 9.
Join 15 Million students on the app today!
Live & recorded classes available at easeDashboard for progress trackingMillions of practice questions at your fingertips
Free Learning Resources
PW Books
Notes (Class 10-12)
PW Study Materials
Notes (Class 6-9)
Ncert Solutions
Govt Exams
Class 6th to 12th Online Courses
Govt Job Exams Courses
UPSC Coaching
Defence Exam Coaching
Gate Exam Coaching
Other Exams
Know about Physics Wallah
Physics Wallah is an Indian edtech platform that provides accessible & comprehensive learning experiences to students from Class 6th to postgraduate level. We also provide extensive NCERT solutions, sample paper, NEET, JEE Mains, BITSAT previous year papers & more such resources to students. Physics Wallah also caters to over 3.5 million registered students and over 78 lakh+ Youtube subscribers with 4.8 rating on its app.
We Stand Out because
We provide students with intensive courses with India’s qualified & experienced faculties & mentors. PW strives to make the learning experience comprehensive and accessible for students of all sections of society. We believe in empowering every single student who couldn't dream of a good career in engineering and medical field earlier.
Our Key Focus Areas
Physics Wallah's main focus is to make the learning experience as economical as possible for all students. With our affordable courses like Lakshya, Udaan and Arjuna and many others, we have been able to provide a platform for lakhs of aspirants. From providing Chemistry, Maths, Physics formula to giving e-books of eminent authors like RD Sharma, RS Aggarwal and Lakhmir Singh, PW focuses on every single student's need for preparation.
What Makes Us Different
Physics Wallah strives to develop a comprehensive pedagogical structure for students, where they get a state-of-the-art learning experience with study material and resources. Apart from catering students preparing for JEE Mains and NEET, PW also provides study material for each state board like Uttar Pradesh, Bihar, and others
Copyright © 2025 Physicswallah Limited All rights reserved.
