SChand Composite Mathematics Class 7 Chapter 17 Symmetry Exercise 17A

  Exercise 17 A

Question 1

Examine the following shapes and tell which of these have a line or lines of symmetry and which do not have any line of symmetry? 

(Diagram to be added)

Question 2

Draw the lines of symmetry in each of the following figures :

Question 3

Draw the line of symmetry in each of the following letters of the English alphabet.

Question 4

Name the seven letters of the English alphabet which have no line of symmetry.

Question 5

Each of the shapes shown Below has two lines of symmetry. Using squared paper copy each these shapes and then draw the two lines of symmetry.

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Question 6

A number of half- shapes with the line of symmetry indicated by dotted line are shown below. Draw the complete symmetrical shape using squared paper. 

 (IMAGE TO BE ADDED)

Question 7

Use the two lines of symmetry to copy and complete each of these shapes. [Hint. Use just une line of symmetry at a time.]

 (IMAGE TO BE ADDED)

Question 8

How many lines of symmetry do the following have :

(i) a scalene triangle

(ii) a square

(iii) an equilateral triangle

(iv) a rhombus

(v) a parallelogram

(vi) a right triangle with equal legs

(vii) a semi-circle

(viii) an angle with Equal arms.

Question 9

Copy the word MATHS onto a grid, as shown. (a) Reflect it about $A B$. (b) Reflect it about CD.

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Question 10

Answer true or false :

(i) A parallelogram has two lines of symmetry.

(ii) The letter $Z$ has one line of symmetry.

(iii) A right angled triangle can have at most one line of symmetry.

(iv) A triangle with more than one line of symmetry is an equilateral triangle.

(v) A pentagon which has more than one line of symmetry must be regular.

Question 11

Multiple Choice Questions (MCQs)

 The number of letters in the word SNAIL that have line symmetry is

(a) 0

(b) 1

(c) 2

(d) 3

Question 12

Which of the following does not have a line symmetry ?

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Question 13

Which of the following road signs has a line symmetry ?

 (IMAGE TO BE ADDED)

Question 14

High Order Thinking Skills (HOTS) 

What do you call a rectangle that has four lines of symmetry ?