Question

Which statement is true about the result of a rigid transformation?

The image will be larger than the pre-image.
The pre-image will be larger than the image.
Each one is unique; no general statement can be made about size.
The pre-image will be congruent to the image.

Answer 1

@asett

Answer 2

You should know the answer to this one!! :) We've been doing it for a while.

Answer 3

C?

Answer 4

@asett please stop leaving.. i think it will be faster and easier of you stayed :)

Answer 5

Sorry, I'm also trying to help @sbuck98. I think it would also be faster if you paid attention to what we've done before :). No, the answer is not C! Remember, transformations preserve distances between every pair of points, therefore the copy will not be larger or smaller than the original. Does that make sense?

Answer 6

I will stay here, though. You've got me all to yourself :))

Answer 7

Yay! thanks :)

Answer 8

So D! :)

Answer 9

Yes! And no problem, I can't deny another volleyball player some help!!

Answer 10

Aw thanks :)
Next!

Answer 11

First do you think it is reflection or rotation? What does it look like?

Answer 12

reflection

Answer 13

Great! Now, is it reflected about the y-axis or the x-axis? (Basically left to right is reflection about the y-axis and up and down is reflection about the x-axis)

Answer 14

y axis

Answer 15

Great, now you have your answer!!

Answer 16

ok next! :)

Answer 17

This one is pretty easy!! It's the most obvious answer :) Also, just out of pure curiosity, what grade math is this? I can't decide if it's pre-cal or geometry.

Answer 18

its pre-alg

Answer 19

Oh wow, I was way off lol

Answer 20

lol :)

Answer 21

c?

Answer 22

Exactly!! I'm so proud of you :D

Answer 23

Thank you! your better than my teacher! :)your the one thats teaching me! im learning because of you <3

Answer 24

Aw, great!! I'm so glad I can help you!! You're a great pupil! I'm sorry you're teacher isn't up to par... ;)

Answer 25

We kinda did this one earlier... Do you remember the symbol for congruency? Take a stab at it!!

Answer 26

B?

Answer 27

Yay!! Great job! :))

Answer 28

next! :) @asett

Answer 29

First, is this a 270 degree cc rotation or a 90 degree cc rotation. Think carefully... :)

Answer 30

270..

Answer 31

Great! I'm just going to give you the answer for this one because I'd have to be physically with you in order to show you what I mean. The answer is D. Does that make sense?

Answer 32

yes :)

Answer 33

next!

Answer 34

First, around which axis is this shape reflected?

Answer 35

x axis

Answer 36

Not quite... the y-axis. Remember: "Now, is it reflected about the y-axis or the x-axis? (Basically left to right is reflection about the y-axis and up and down is reflection about the x-axis)"

Then, divide the length of F'G' by the length of FG and you've got your scale factor!!

Answer 37

ok...
D?

Answer 38

Nope: F'G' length is 4 and FG length is 1. 4/1 = 4, which is your scale factor. Do you understand how I got those lengths?

Answer 39

oh ok so C

Answer 40

Great job!

Answer 41

Knowing what we just did, can you try to solve this one?

Answer 42

A

Answer 43

Nope! Q'R' length is 3 and QR is 1. For dilation, just reverse the division :)

Answer 44

1/5?

Answer 45

or no srry 1/3

Answer 46

Yep!!

Answer 47

Which sequence of transformations creates a similar, but not congruent, triangle?

Rotation and translation
Dilation and rotation
Reflection and rotation
Translation and reflection

Answer 48

Remember, similar implies that the shape is different in size than the original, leaving only one option! :)

Answer 49

A?

Answer 50

Not quite! B: dilation (think of your pupils at the optometrist) :D

Answer 51

b?

Answer 52

Yep! Does that make sense?

Answer 53

yea :)

Answer 54

omg I feel asleep lol. I am so sorry. Is it all right for us to pick this up another time? I'll be here about the same time (bar something happening at school or work)? I hope you learned a lot!! It was great working with you! Get some good rest. :D