Flashcards in 9.1-9.4 Test Deck (16):

1

## How to write a rule

###
Ex.

(X+2,Y-2)

2

## How to verify translation is isometry

###
Show the original points and the prime points

Then show how each one applied the same rule

3

## Reflected in the x-axis

### (A,-B)

4

## Reflected in the y-axis

### (-A,B)

5

## Reflected in the line y=x

### (B,A)

6

## Reflected in the line y=-x

### (-b,-a)

7

## When doing a two part reflection, the second part is based on the ----- reflection

### Not the original picture but the prime or first reflection

8

## Rotations of Positive magnitude rotate

### Counter clock wise

9

## Rotations of a negative magnitude rotate

### Clock wise

10

## 90 degrees rotate

### (-b,a)

11

## 180 degrees rotate

### (-a,-b)

12

## 270 degree rotate

### (b,-a)

13

## How to rotate around a different point than original point

###
Pick two points

Subtract the rotation point

Apply rule

Add point back in

14

## When given an equation of a line needed to be rotated, when it's 180 degrees it's always

### The same line, when rotated 180 degrees it comes out to be the same line

15

##
A(-1,2), rule is

A prime = (?,?)

###
(-4,3)

-1 + -3 = -4

1 + 2 = 3

16