# NCERT Solutions for Class 7 Maths Chapter 14 Symmetry

NCERT Solutions for Class 7 Maths Chapter 14  Symmetry- Symmetry is an important concept of geometrical part, commonly exhibited in nature and also it is used in almost every field of activity. The idea of symmetry used by car manufacturers, artists, designers of jewelry or clothes, architects, etc. In this chapter, there is a total of three exercises with 19 questions. The NCERT Solutions for Class 7 Maths Chapter 14  Symmetry are prepared and solved by our experts as per the CBSE syllabus. NCERT Solutions for Class 7 Maths is the best study material which provides solutions of each and every question present in the class 7 NCERT Book for Maths subject. These NCERT solutions help students in their preparation of CBSE final exams and various national level competitive exams.

The tree-leaves, the beehives, religious symbols, the flowers, handkerchiefs, and rugs everywhere we find various types of symmetrical designs. In NCERT Class 7 Maths Chapter 14  Symmetry we will discuss line symmetry, lines of symmetry for regular polygons and rotational symmetry. The "Line of Symmetry" is defined as the imaginary line or axis that passes through the centre of the object or shape and divides it into two perfectly identical halves. Rotational symmetry is symmetry when an object or shape is rotated around a centre point (fixed point) by a number of degrees and the object or shape looks exactly the same. In a complete turn of 360-degree, the number of times an object or shape looks exactly the same is called the order of rotational symmetry. The order of symmetry for an equilateral triangle is 3 and the order of symmetry for a square is 4.

Regular polygons like a regular hexagon, regular pentagon, square etc have equal sides and equal angles. They have more than one lines of symmetry. Number of lines of symmetry of some regular polygon are given in the following table-

 Regular polygon Regular hexagon Regular pentagon Square Equilateral triangle No. of lines of symmetry 6 5 4 3

## Topics of NCERT Grade 7 Maths Chapter 14  Symmetry

14.1 Introduction

14.2  Lines of Symmetry for Regular Polygons

14.3  Rotational Symmetry

14.4  Line Symmetry and Rotational Symmetry

## NCERT Solutions for Class 7 Maths - Chapter-wise

 Chapter No. Chapter Name Chapter 1 Integers Chapter 2 Fractions and Decimals Chapter 3 Data Handling Chapter 4 Simple Equations Chapter 5 Lines and Angles Chapter 6 The Triangle and its Properties Chapter 7 Congruence of Triangles Chapter 8 Comparing Quantities Chapter 9 Rational Numbers Chapter 10 Practical Geometry Chapter 11 Perimeter and Area Chapter 12 Algebraic Expressions Chapter 13 Exponents and Powers Chapter 14 Symmetry Chapter 15 Visualizing Solid Shapes