Chapter 11, Problem 11CT

To determine

To find: Whether the object has line symmetry and whether it has rotational symmetry.

Answer to Problem 11CT

The given figure has rotational symmetry.

Explanation of Solution

Given information: The Figure is shown below.

  

Calculation:

The graph is shown below.

  

Figure-1

The above figure has two line of symmetry. The two diameters shown in the figure are line of symmetry because when you reflect the figure in these lines figure mapped onto itself.

A figure in a plan has rotational symmetry when the figure can be mapped itself by a rotation of 180 degrees or less about center.

Thus, the given figure has rotational symmetry.