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# RD Sharma Class 8 Solutions Chapter 15 - Understanding Shapes I Polygons (Ex 15.1) Exercise 15.1 Last updated date: 26th Nov 2023
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## RD Sharma Class 8 Solutions Chapter 15 - Understanding Shapes I Polygons (Ex 15.1) Exercise 15.1 - Free PDF

CBSE Class 8 Mathematics Chapter 15 of RD Sharma Solutions book consists of Understanding Shapes I Polygons. It is a Mathematical chapter based on the concept of shapes. It has only one exercise which consists of seven questions. Each of the questions covers different topics of the chapter to test the overall understanding of concepts. For Example, Open curves, Closed curves, Interior and Exterior of a polygon, Concave & Convex polygon, Polygon with a different number of sides, etc.

To understand all the concepts of this chapter, Vedantu provides RD Sharma Class 8 Solutions for Chapter 15- Understanding Shapes I Polygons, Exercise-15.1 free PDF.

Free PDF download of RD Sharma Class 8 Solutions Chapter 15 - Understanding Shapes I Polygons Exercise 15.1 solved by Expert Mathematics Teachers on Vedantu.com. All Chapter 15 - Understanding Shapes I Polygons Ex 15.1 Questions with Solutions for RD Sharma Class 8 Maths to help you to revise the complete Syllabus and Score More marks. Register for online coaching for IIT JEE (Mains & Advanced) and other engineering entrance exams. Register Online for Class 8 Science tuition on Vedantu.com to score more marks in the CBSE board examination. Every NCERT Solution is provided to make the study simple and interesting on Vedantu.

## Advantages of using RD Sharma Reference Books

RD Sharma’s book for Mathematics is one of the best reference books for students across different boards. The following are some of the advantages of using RD Sharma books for Mathematics:

• The book follows an exam-oriented approach to simplify the concepts for students for exam time revisions. It follows a detailed approach and builds a strong foundation of basic concepts in students' minds.

• Students preparing through RD Sharma books have a greater knowledge of concepts and retain the concepts for a longer period of time. Every topic is explained in a unique way and covers all the topics. It is error-free to provide maximized concept knowledge for students.

•  The questions are explained using drawings and illustrations which are way easier to remember. The book is designed to help students practice the concept on a regular basis. Even RD Sharma books are used for the preparation for competitive exams.

## FAQs on RD Sharma Class 8 Solutions Chapter 15 - Understanding Shapes I Polygons (Ex 15.1) Exercise 15.1

1. What is a polygon?

A polygon is a two-dimensional figure, which consists of line segments connected end to end. Three or more line segments join to form a polygon. The name poly means many and gons means side. As the name suggests it has multiple sides, Based on the number of sides the polygons are classified into different types,

• Three-sided- Triangle.

• Five-sided- Pentagon.

• Six-sided- Hexagon.

• Eight-sided- Octagon.

2. What are some of the important types of polygon?

The following are some of the important types of polygon:

• Regular polygon- In this polygon, all the sides, interior, and exterior angles are equal.

• Irregular polygon- In this polygon, all the sides and angles are not equal. It is completely the opposite of the regular polygon.

• Concave polygon- This polygon has at least one side angle of more than 180 degrees.

• Convex polygon- It is opposite of the concave polygon, where interior angles are less than 180 degrees and vertices in the polygon always face outwards.

• Quadrilateral polygon- It has four sides. Square, Rectangle, Parallelogram are some of the examples of it.

• Pentagon- This polygon has five sides.

3. What are some real-life examples of Polygon?

The following are some of the real-life applications of the polygon in our daily life,

• The rectangular part of a table or chair top is a polygon

• The triangular- pyramids of Egypt are polygons.

• Electronic items such as TV, Mobile, Laptop, Monitor screens are polygon.

• The truss and walls of the building are polygons.

• The football ground which has a rectangular shape is a polygon.

• Polygons such as rectangles, triangles, squares are easy to find in real life. But shapes like trapezium, rhombus, pentagon, hexagon, and parallelogram are rare to find. However, we can find it in jewelry and ornaments.

4. Where can I find the study materials for Class 8?

You can find the online study materials for all the classes including Class 8 on Vedantu, Where you can get access to materials for Maths, Science, English, Hindi, and Social Science. It provides NCERT solutions, RD Sharma solutions, question papers, revision notes, syllabus, and sample papers in pdf format. This can be downloaded and used for learning purposes offline too. Every study material has been solved by the expert teachers and the content is delivered in such a way to simplify the efforts of students to have a hassle-free learning experience.

5. How to score good marks in Maths?

Here are a few effective tips to get good marks in Maths:-

• Practice as many problems and various concepts as you can. Maths is a hands-on subject, which can be mastered only through regular practice.

• Start by solving examples. Don't start by solving complex problems. Always start from basics & clear your doubts from your teacher, if any.

• Instead of memorizing the formulas, try to solve related questions as it can give a clear knack for understanding.

• Understand the derivation in a practical way rather than memorizing.

• Don't lose touch with the previous year’s questions to understand the Maths pattern in a better way.