R s aggarwal mathematics class 7 Solutions for Chapter 18 reflection and rotational symmetry

Exercises in Chapter 18 reflection and rotational symmetry Grade 7

Reflection and Rotational Symmetry Exercise 18A

Reflection and Rotational Symmetry Exercise 18B

Questions in Reflection and Rotational Symmetry Exercise 18A

Tick the correct answer:

A scalene triangle has

(a) no line of symmetry (b) one line of symmetry

Tick the correct answer:

A rectangle is symmetrical about

(a) each one of its side

(b) each one of its diagonal

(d) none of these

Tick the correct answer:

A square has

(a) one line of symmetry (b) two lines of symmetry

Questions in Reflection and Rotational Symmetry Exercise 18B

What is the order of rotational symmetry of a square? Give the angles of such rotations.

(i) How many lines of symmetry does a rhombus have?

(ii)What is the order of rotational symmetry of a rhombus?

Write three letters of the English alphabet which have two lines of symmetry and rotational symmetry of order 2.

Give an example of a figure that has a line of symmetry but does not have rotational symmetry.

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