Degree of Rotation

Q. What is the order of rotational symmetry of a square about its centre?

1. 4

Q.

Order of rotational symmetry of the letter X is ___ .

Q.

Question 102
By what minimum angle does a regular hexagon rotate so as to coincide with its original position for the first time?

Q.

What is the order of rotational symmetry in the following figure?

1. 1

2. 2

3. 3

4. 4

Q.

A segment has rotational symmetry of order $1.$

1. True
2. False

Q. Give the order of rotational symmetry for given figure.

Q. The number of times a figure fits into itself in one complete rotation is called the order of rotational symmetry.

1. True
2. False

Q. Find the order of rotational symmetry for the given image.

Q.

A figure with angle of rotation as ${17}^{\circ }$ has rotational symmetry of order 3.

1. False

2. True

Q.

Order of rotational symmtery of given figure is ____

Q. Give the order of rotational symmetry for each figure:

Q. Give the order of rotational symmetry for each figure:

Q.

The letter S has which of the following:

1. rotational symmetry

2. line symmetry

3. both line and rotational symmetry

4. no symmetry

Q. The number of times a figure fits into itself in one complete rotation is called the order of rotational symmetry.

1. True
2. False

Q.

Find the order of rotational symmetry in the given image.

1. 3

2. 0

3. 2

4. 1

Q.

If a fan has rotational symmetry of order 4, then how many blades does it have?

1. 2

2. 3

3. 4

4. 5

Q.

Find the order of rotational symmetry in the given image.

1. 6

2. 8

3. 0

4. 10

Q. Burst the bubbles that contain figures whose angle of rotation is more than ${90}^{\circ }.$

1. Square
2. Rectangle
3. Rhombus
4. Kite
5. Regular hexagon
6. Circle
7. Semi circle
8. Parallelogram

Q. _____=$\frac{{360}^{\circ }}{Orderofrotation}$

1. Centre of rotation
2. Angle of rotation
3. Point of rotation
4. Line of symmetry

Q.

How many angles of rotation a regular polygon will have if it has ‘n’ sides?

1. $n$

2. $n-1$

3. $n+1$

4. $\frac{n}{2}$

Q.

If a fan has 3 blades, then its degree of rotation is _____.

1. ${120}^{\circ }$

2. ${150}^{\circ }$

3. ${180}^{\circ }$

4. ${90}^{\circ }$

Q. If the angle of rotation of a regular polygon is ${90}^{\circ },$ then its order of rotational symmetry is 2.

1. False
2. True

Q. Hour hand of a clock rotates at an angle of ________ is $24$ hours.

1. ${180}^o$
2. ${360}^o$
3. ${720}^o$
4. ${540}^o$

Q.

The order of rotational symmetry for the given image is .

1. 3
2. 6
3. 5
4. 7

Q.

Question 86
State whether the statement is True or False.
After rotating a figure by ${120}^{\circ }$ about its centre, the figure coincides with its original position. This will happen again, if the figure is rotated at an angle of ${240}^{\circ }$.

Q.

Which of the following cannot be the angle of rotational symmetry of a regular polygon?

1. ${120}^{\circ }$

2. ${40}^{\circ }$

3. ${72}^{\circ }$

4. ${180}^{\circ }$

Q. Order of rotational symmetry is the number of times an object looks exactly the same in a complete turn of _________

1. ${360}^{\circ }$
2. ${90}^{\circ }$
3. ${60}^{\circ }$
4. ${180}^{\circ }$

Q.

A figure with angle of rotation as ${17}^{\circ }$ has rotational symmetry of order more than 1. Say true or false.

1. True
2. False