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## What is a transformation in which a figure is rotated about a point?

**A rotation** is a transformation where a figure is turned around a fixed point to create an image. The lines drawn from the preimage to the center of rotation and from the center of rotation to the image form the angle of rotation.

## What is the name of the fixed point about which an object is rotated?

A FIXED POINT IN ABOUT AN OBJECT ROTATE IT CALLED “**“CENTRE””**.

## What is a transformation in which a figure is rotated about a point called the center of rotation?

**A rotation** is a transformation in which a figure is rotated about a point called the center of rotation. The number of degrees a figure rotates is the angle of rotation. A dilation is a transformation in which a figure is made larger or smaller with respect to a point called the center of dilation.

## How do you write a rotation transformation?

to form Image B. To write a rule for this rotation you would write: **R270◦ (x,y)=(−y,x)**. Notation Rule A notation rule has the following form R180◦ A → O = R180◦ (x,y) → (−x,−y) and tells you that the image A has been rotated about the origin and both the x- and y-coordinates are multiplied by -1.

## When an object rotates about a fixed point what is the fixed point called?

The rotation turns an object about a fixed point. This fixed point is **the center of rotation**. The angle of turning during rotation is called the angle of rotation.

## Is the fixed point that a figure is rotated around?

You know that a rotation is a transformation that turns a figure about a fixed point. This fixed point is **the turn center or the center of rotation**.

## Is a point about which an object rotates?

The point about which the object is rotated can be inside the figure or anywhere outside it. The amount of rotation is called the **angle of rotation** and is measured in degrees. By convention a rotation counter-clockwise is a positive angle, and clockwise is considered a negative angle.