Chapter 11.3, Problem 11PPS

To determine

To explain:rotational symmetry of given star.

Explanation of Solution

Given information:

Consider

Consider the figure is five sided.

Then each side makes ${72}^0$ with the centre.

If the star rotated about ${72}^0$ around its centre. Then, the figure is

exactly same as before rotation.

So,we can say that theflower has rotational symmetry.

The angle of rotation is ${72}^0$

Hence, the given flower has the rotational symmetry and it has angle of rotation ${72}^0$