Name: Real Life Examples on Symmetry
Uploaded: 2019-07-19
Duration: 1 min 32 s
Description: In this video, we will learn the concept of symmetry and various real-life examples of symmetry and the line of symmetry of different figures

Question

Which of the following figures have rotational symmetry of order more than $1$ ?

Accepted Answer

We need to find those figures, which have rotational symmetry of order more than $1$ .

If we rotate a figure about a fixed point by a certain angle and the figure looks exactly the same as before, then the figure has rotational symmetry.

The angle of rotation is the minimum angle rotation of a figure to get exactly the same figure as the original.
For the above circle, we get the same figure when we rotate it from the centre at $90 °$ .
So, the angle of rotation is $90 °$ .
This circle needs to be rotated $4$ times to reach its original position.
So, the order of rotation is $4$ .

For the above equilateral triangle, we get the same figure when we rotate it from the centre at $120 °$ .
So, the angle of rotation is $120 °$ .
This triangle needs to be rotated $3$ times to reach its original position.
So, the order of rotation is $3$ .

For the above figure, we get the same figure when we rotate it from the centre at $360 °$ .
So, the angle of rotation is $360 °$ .
This figure needs to be rotated $1$ time to reach its original position.
So, the order of rotation is $1$ .

For the above figure, we get the same figure when we rotate it from the centre at $180 °$ .
So, the angle of rotation is $180 °$ .
This figure needs to be rotated $2$ times to reach its original position.
So, the order of rotation is $2$ .

For the above circle, we get the same figure when we rotate it from the centre at $120 °$ .
So, the angle of rotation is $120 °$ .
This circle needs to be rotated $3$ times to reach its original position.
So, the order of rotation is $3$ .

So, the figures which have rotational symmetry of order more than $1$ are shown below.

Which of the following figures have rotational symmetry of order more than $1$ ?

Important Questions on Symmetry

Learn and Prepare for any exam you want !

Which of the following figures have rotational symmetry of order more than 1?

Important Questions on Symmetry

Learn and Prepare for any exam you want !

Which of the following figures have rotational symmetry of order more than $1$ ?