# Warm up - PowerPoint PPT Presentation

1 / 20

Warm up. A function is even. Point A(-3, 4) is on the even function. Name another point. A function is even. Point B(9, 2) is on the even function. Name another point. Reflect C(-5, -3) over the y-axis. Reflect D(2, -4) over the x-axis. Reflect E(-12, 4) over y = -x. (3 , 4). (- 9, 4).

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Warm up

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

### Warm up

• A function is even. Point A(-3, 4) is on the even function. Name another point.

• A function is even. Point B(9, 2) is on the even function. Name another point.

• Reflect C(-5, -3) over the y-axis.

• Reflect D(2, -4) over the x-axis.

• Reflect E(-12, 4) over y = -x.

(3, 4)

(-9, 4)

C’(5, -3)

D’(2, 4)

E’(-4, 12)

## Rotations

### Rotate 90 Clockwise about the Origin(Same as 270 Counterclockwise)

Change the sign of x and switch the order

### Rotate 90 Counterclockwise about the Origin(Same as 270 Clockwise)

Change the sign of y and switch the order

### Rotate 90° counterclockwiseabout the origin

ONLY Change the signs

### Rotational Symmetry

Any figure that can be turned or rotated less than 360° about a fixed point so that the figure looks exactly as it does in its original position.

### Which figures have rotational symmetry? For those that do, describe the rotation that map the figure onto itself.

Regular pentagon

Rhombus

Isosceles triangle

NO

NO

## Classwork

Rotations Practice Worksheet

## Homework

Rotations HW Worksheet