These Class 7 Maths Extra Questions Chapter 12 Symmetry will help students prepare well for the exams.

## Class 7 Maths Chapter 12 Extra Questions Symmetry

### Class 7 Maths Symmetry Extra Questions – 2 Marks

Question 1.

A, P

Solution:

A has one line of symmetry

P has no lines of symmetry.

Question 2.

Q, H

Solution:

Q has no lines of symmetry.

H has two lines of symmetry.

Question 3.

M, O.

Solution:

M has one lines of symmetry.

‘O’ has infinite lines of symmetry.

Question 4.

Z, S.

Solution:

Letter Z has no lines of symmetry.

Letter S has no lines of symmetry.

Question 5.

B, X.

Solution:

Letter B has one lines of symmetry.

Letter X has two lines of symmetry.

Question 6.

Square and Rectangle.

Solution:

Order, of rotation of a Square is 4.

Order of ratation of a Rectangle is 2.

Question 7.

Equilateral triangle and Circle.

Solution:

Order of rotation of an Equilateral triangle is 3.

Order of rotation of a Circle is infinite.

Question 8.

Rhombus, Semi-circle

Solution:

Order of rotation of a Rhombus is 2.

Order of rotation of a Semi-circle is 1.

Question 9.

Square, Circle?

Solution:

Angle of rotation of a Square is 90°.

Angle of rotation of a Circle is any angle.

Question 10.

Rhombus, Semicircle?

Solution:

Angle of rotation of a Rhombus is 180°.

Angle of rotation of a Semicircle is 360°.

Question 11.

Regular hexagon, Rectangle.

Solution:

Angle of rotation of a Regular Hexagon is 60°.

Angle of rotation of a Rectangle is l80°.

### Symmetry Extra Questions Class 7 – 3 Marks

Question 12.

Square, Rectangle, Circle.

Solution:

Number of line symmetry for square = 4

Number of line symmetry for rectangle = 2

A circle has infinite lines of symmetry.

Question 13.

Letter C, N and E

Solution:

Question 14.

Equilateral triangle, semicircle.

Solution:

Number of lines symmetry for an equilateral triangle is 3.

Number of lines symmetry for a semi circle is 1.

Question 15.

Question 16.

What is the line of symmetry of a semicircle? Does it have rotational symmetry?

Solution:

The line of symmetry for a semicircle is the perpendicular bisectors of Diameter.

It has no rotational symmetry.

Question 17.

Name any two figures that have both line symmetry and rotational symmetry.

Solution:

An equilateral triangle and square have both line symmetry and rotational symmetry.

Question 18.

Given an example of a letter of the English alphabet which has

i) no line of symmetry and

ii) rotational symmetry of order 2.

Solution:

i) Z

ii) N

Question 19.

Draw the line of symmetry for

i) a kite

ii) an arrow head.

Solution:

Question 20.

Draw line of symmetry for a line segment and an angle. What do you call them?

Solution:

The line of symmetry for a line segment is called its perpendicular bisector.

The line of symmetry for an angle is called the bisector of the angle.