9.1-9.4 Test Flashcards Preview

Honors Geometry > 9.1-9.4 Test > Flashcards

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

Component form of a vector