Order of Symmetry

Q.

Letters H, O and Z have both line symmetry and rotational symmetry.

1. True

2. False

Q. The order of rotational symmetry of a rhombus is __.

1. 1
2. 2
3. 4
4. 6

Q.

Order of rotational symmetry of a circle is __________.

Q.

English alphabet "Z" has rotational symmetry of order ______.

1. 1

2. 4

3. 2

4. 3

Q.

Order of rotational symmetry of an equilateral triangle is ___

Q.

Give the order of rotational symmetry for each figure:

Q. What is the order of rotation and centre of Rotation for Semi-circle?

Q.

Draw two figures which exhibit only the rotational symmetry, but not the reflection symmetry.

Q. Let 'X' be the number of lines of symmetry and 'Y' be the order of rotational symmetry of the given figure. Then, 2X + Y + 1 = __.

1. 9
2. 10
3. 12
4. 13

Q. Find the order of rotational symmetry of a semi-circle.

1. $0$
2. $1$
3. $2$
4. $3$

Q.

Order of rotational symmetry for a scalene triangle is ___

Q.

The order of the rotational symmetry for the following figure is :

1. 1

2. 2

3. 4

4. 3

Q. What is the order of rotational symmetry of the below figure?

1. 2
2. 3
3. 4
4. 1

Q.

An object looks exactly similar to the original object if it is rotated by some angle. This type of symmetry is called ______ symmetry.

1. Mirror

2. Angle

3. Rotational

4. Line

Q. What is the order of symmetry for a circle?

1. 0
2. 4
3. Infinite
4. 1

Q.

Find the number of letters (upper case) in English alphabet which have rotational symmetry. (Answer in terms of a number.)

___

Q.

Give the order of the rotational symmetry of the figure given below.

1. 1

2. 4

3. 5

4. 6

Q.

Find the order of rotation if the angle of rotation is $30°$.

Q. Match the given figures with order of their rotational symmetry about the point marked.

1. 1
2. 2
3. 3

Q.

Question 46
Fill in the blank to make statement true.
Order of rotational symmetry of a rectangle is ___.

Q. What is the order of rotational symmetry of the given figure?

1. 2
2. 3
3. 4
4. 6

Q.

Order of rotational symmetry of the letter X about the point of intersection of the lines is ___.

Q.

Find the order of rotational symmetry for the given figure.

1. 1

2. 2

3. 3

4. 4

Q.

For a circle, the order of rotation is

1. 2

2. Infinite

3. 1

4. 0

Q.

Question 117
Tell whether each figure has rotational symmetry or not.

Q.

The order of rotational symmetry of wall clock is

1. 2

2. 3

3. 4

4. 1

Q.

Find the order of rotation if the angle of rotation is $45°$.

Q.

Find the order of rotation if the angle of rotation is $60°$.

Q.

Give the order of the rotational symmetry for each figure.

1. 1

2. 4

3. 5

4. 6

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