Courses for Kids
Free study material
Offline Centres
Store Icon

RD Sharma Class 7 Maths Solutions Chapter 18 - Symmetry

Last updated date: 04th Mar 2024
Total views: 638.4k
Views today: 7.38k
IVSAT 2024

RD Sharma Solutions for Class 7 Maths Chapter 18 - Symmetry - Free PDF Download

Free PDF of RD Sharma Solutions/Answers for Class 7 Maths of Chapter 18 - Symmetry is offered here. Students who wish to score good marks in their examinations can look up to RD Sharma Solutions provided by Vedantu. These solutions are formulated by the Vedantu expert team in Maths to help students to solve their doubts and to make them shine bright in their academics.  Chapter 18 - Symmetry has three exercises in total which are easy. RD Sharma Class 7 Maths,  Chapter 18 - Symmetry, is prepared and solved by Expert Mathematics Teachers on Vedantu with step-by-step explanations in each exercise. The solutions for Symmetry are students’ top choices as it helps students complete their homework and prepare for exams, and even makes the revision process quicker and more fun. 

Vedantu offers online coaching for IIT JEE (Mains & Advanced), NEET exam, Engineering, and Medical entrance exams.

Class 7 RD Sharma Textbook Solutions/Answers Chapter 18 - Symmetry

Introduction to RD Sharma’s  Class 7 Maths Chapter - “Symmetry” 

RD Sharma Maths Solutions Class 7 Chapter 18 - Symmetry,  is an easy chapter that would surely provide you with good scores in your exams. Vedantu specializes in covering a plethora of questions from varied difficulty/complexity levels, which range from easy to hard questions, where students acquire the skill to understand the nature of different questions with various approaches.
Let us understand some Basics of Symmetry, which would clear your concepts in an easy language.

What is Known As Symmetry?

In Maths, Symmetry is an important geometrical concept. A Shape can either be symmetric or asymmetric. When any object/thing is divided into two identical halves, they form a mirror image of each other. The two identical halves are said to be ‘symmetrical’ to each other. Symmetry is utilized and used in our daily activities and day-to-day life.

  • Imaginary line: When any shape or object is divided into two equal halves, it is divided by a line. That line is known as an Imaginary line or Line of Symmetry - which can be vertical, horizontal, or even diagonal. There could be more than one or more than one line. 

  • Reflection Symmetry:  It is a kind of symmetry where when a shape is divided into halves, one half of the figure/shape reflects the other half of the figure/shape. It is also said to be known as Mirror Symmetry. 

  • Point Symmetry: It is a kind of symmetry where a point on one side of any shape is an exact match to another point, which is exactly at the same distance but in the opposite direction. 

  • Rotation Symmetry: It is a kind of symmetry that is unique from the others, which does not involve folding or cutting the shape into halves to check whether they are symmetrical or not. It involves rotation. Rotational Symmetry is when a shape/figure is rotated from its center point and it still looks exactly the same after being rotated.

The Symmetry Chapter of RD Sharma Book deals with the topics like - lines of Symmetry, lines of Symmetry for geometrical objects/shapes such as rectangle, rhombus, triangle and, even a line segment. It also talks about concepts like - lines of Symmetry of regular polygons, for instance, equilateral triangle, regular pentagon, square, regular hexagon, line of symmetry in regards with different types of symmetry such as- reflection, point, and rotational symmetry which further extends to the angle of rotation and order of rotational symmetry.

In this Chapter 18 - Symmetry, several exercise questions with solutions for RD Sharma Class 7 Maths are given to help the students and understand the concepts better. 

List of Exercise With Solutions of  Class 7 Maths Chapter 18 -  Symmetry

We have provided step by step solutions for all exercise questions given in the pdf of Class 7 RD Sharma Chapter 18 - Symmetry. All the Exercise questions with solutions in Chapter 18 - Symmetry are given below:

Exercise 18.1

Exercise 18.2

Exercise 18.3

At Vedantu, students can also get Class 7 Maths Revision Notes, Formula and Important Questions and also students can refer the complete Syllabus for Class 7 Maths, Sample Paper and Previous Year Question Paper to prepare for their exams to score more marks.

FAQs on RD Sharma Class 7 Maths Solutions Chapter 18 - Symmetry

1. How can RD Sharma Solutions provided by Vedantu be beneficial and reliable for exams? 

RD Sharma Maths Solutions provided by Vedantu of class 7 are not at all complex, rather it provides easy and simplified answers because our expert faculty team uses different approaches while answering a question. This way, students learn multiple methods and ways of answering a question with which they feel confident and assured. Furthermore, this will surely boost their perspective and interpretational skills. So, to sum up, our solved solutions are 100% beneficial and reliable as they’re produced by experts in a very detailed and informative manner. 

2. How can we say that this shape is symmetrical or not? Explain with steps. 

An object/shape is said to be symmetrical when both of its sides/halves are equal or identical. To check whether it's symmetrical or not, take a piece of paper and draw any shape on it, for example, a square. Cut that square out, and try to fold it equally. If that shape has an imaginary line passing over which makes the two sides overlap each other completely, then it's said to be symmetrical, else it would be known as asymmetrical, which is the opposite of it. 

3. How many exercises are there in this chapter and are all solutions/answers provided correctly? 

There are 3 exercises in this chapter of the RD Sharma Book. Yes, the solutions/answers are reliable and trustworthy as our finest and hardworking experts have produced and solved those by themselves in a very meticulous and precise manner. Each question would accompany an answer which has steps and explanations, even diagrams/figures if required. Under each exercise of the Symmetry chapter, solutions are provided with which students can learn how to solve and answer a question in an informative way which would surely result in good scores. 

4. Should I skip this chapter of RD Sharma or is it any chapter? 

Symmetry is one of the easiest chapters in Maths and Class 7 RD Sharma Solutions provided by Vedantu makes the chapter more interesting and scoring. Everyone should learn and practice this chapter for their exams and not at all skip it because if anyone has gained an excellency in his chapter they would earn skyrocketing marks just like that. Practicing the exercises daily and solving the questions will improve your answering skills and would allow you to score well in your overall exam. 

5. Differentiate between Centre of Rotation and Angle of Rotation?

In Rotational Symmetry, a shape/figure is rotated from a point that is fixed, which is known as the center point from which the rotation happens which in short, is called the Centre of Rotation. On the other hand, when a shape/figure is rotated or turned with a particular angle, that angle is known as the Angle of Rotation. Rotational Symmetry is a kind of symmetry where the shape isn’t folded or cut into two halves, rather they are rotated or turned. If after rotating the shape is the same before rotation then it is said to be known as Rotational Symmetry.