Question

What is the angle of rotation counterclockwise about the spinner's center that maps label g to label B?

108
144
180
216

Answer 1

180

Explanation:

In transformation, there are different movements that can be employed to describe the motion of a shape in the plane. These are rotation, shear, reflection and translation.

Each transformation maps the shape into a new shape.

In rotation, the object is turned either clockwise or anticlockwise. This is done by means of rotation.

The rotations take place in multiples of 90⁰, that is 90⁰, 180⁰, 270⁰.

Hence 180 is the correct answer.

Answer 2

The answer is:

The angle of rotation counterclockwise about the spinner's center that maps label g to label B is 180° .

Explanation:

The angle of rotation counterclockwise about the spinner's center that maps label g to label B is 180° .

Look at the attached picture of a spinner:

We know that the angle formed by a straight line is equal to 180°

So, in order to map label g to label B we have to set the needle of the spinner straight. Hence the angle formed by the needle is 180° ....