The DAV Class 7 Maths Book Solutions and **DAV Class 7 Maths Chapter 13 Worksheet 1** Solutions of Symmetry offer comprehensive answers to textbook questions.

## DAV Class 7 Maths Ch 13 WS 1 Solutions

Question 1.

Make any two ink-dot designs.

Answer:

Take a piece of paper and put some ink drops on it. Now, fold the paper and press two parts against each other. You will get ink-drt design.

Question 2.

Make any two symmetrical paper cut designs.

Answer:

Question 3.

Mark the corresponding holes for the given line of symmetry in the following figures.

Answer:

Question 4.

Write three letters of English alphabet each having the following number of lines of symmetry,

(i) one line of symmetry.

Answer:

(ii) two lines of symmetry.

Answer:

Question 5.

Write five letters of English alphabet having no line of symmetry.

Answer:

F, G, N, P, Q, J, K, S, Z

Question 6.

Draw the line of symmetry for the following figures.

Answer:

### DAV Class 8 Maths Chapter 13 Worksheet 1 Notes

A figure is said to be symmetrical about a line if it is folded about that line, the two part cover completely each other.

Example:

The above figures are symmetrical about the line l.

The line of symmetry of a line segment is perpendicular bisector of the line.

A line has infinitely many lines of symmetry.

The line of symmetry of an angle is the bisector of the angle itself.

A regular polygon of n sides has i lines of symmetry.

There are infinite number of lines of symmetry of a circle. Infact each diameter of a circle its line of symmetry.