# Dale Copy of 8.GM.1 - Messing With Lisa Rotations Only

- Author:
- Dan Dale, Tim Brzezinski, Sharon Mahon

## Let's Rotate Mona!

## To work this applet...

## Note: LARGE POINTS are MOVEABLE.

## Make Mona rotate 90 degrees (90 degrees CCW).

1) Where is the point (2,-4) after a rotation of 90 degrees CCW? 2) Where is the point (5,-4) after a rotation of 90 degrees CCW? 3) Write a rotation of 90 degrees CCW as a function. Answer below.

## Make Mona rotate 180 degrees (180 degrees CCW).

1) Where is the point (2,-4) after a rotation of 180 degrees CCW? 2) Where is the point (5,-4) after a rotation of 180 degrees CCW? 3) Write a rotation of 180 degrees CCW as a function. Answer below.

## Make Mona rotate 270 degrees (270 degrees CCW).

1) Where is the point (2,-4) after a rotation of 270 degrees CCW? 2) Where is the point (5,-4) after a rotation of 270 degrees CCW? 3) Write a rotation of 270 degrees CCW as a function.

## Make Mona rotate -90 degrees (90 degrees CW).

1) Where is the point (2,-4) after a rotation of 90 degrees CW? 2) Where is the point (5,-4) after a rotation of 90 degrees CW? 3) Write a rotation of 90 degrees CW as a function. 4) Compare the answers to a 90 degrees CW rotation to the answers to a 270 degrees CCW rotation. What do you notice? Answer below.

## Use the function rules from above to answer.

Where would the new points be if A(2,4) V(4,1) E(-3,5) R(4,-2) Y(0,-3) after a rotation 90 degrees counterclockwise? Answer below. Use A', V', E', R' and Y' to indicate the new points.

## Question 1:

## Question 2

## Question 3

Question 1 Answer _________ Question 2 Answer _________ Question 3 Answer _________ Answer below.