Question

Need a little help (will fan and medal):

Answer 1

http://assets.openstudy.com/updates/attachments/56662e4de4b03c442cf32fdf-emmynimmy-1449537159465-screenshot20151207at8.11.16pm.png

Answer 2

This isn't to bad if you think about it and you kinda know what you're dealing with.

Do reflecting, translating, or rotating the triangle change the size, shape, and [therefore] the perimeter in any way? That's kinda the point of this question.

Answer 3

so, to begin with, how would you calculate the perimeter of the triangle?

Answer 4

um, a+b+c= perimeter

Answer 5

yes... so before you do any of the operations in a, b, or c to the triangle, the perimeter that you calculate is the perimeter of the pre-image.

Answer 6

yeah, so what do I do then?

Answer 7

well, a, b, and c are each asking you to redraw the triangle. If I were doing the problem, I'd redraw them on separate graphs. 5a wants you to simply to draw the triangle rotated 180 degrees.

Answer 8

I know, but like I just can't seem to figure out how to rotate it, I can do the translation part, and maybe even the reflection part

Answer 9

It's tricky, cause it's not telling you how to do it - there are different ways to do it, but I'm assuming that the question is trusting that you have the spatial reasoning skills to redraw it... I'm also assuming they are suggesting a rotation about it's center.

Answer 10

In this case, it would be easiest to rotate it about the center of the hypoteneuse though... it would also make the numbers nicer to deal with. I'll draw you an example:

Answer 11

okay thanks

Answer 12

draw the example so i know what your talking about

Answer 13

thanks for helping btw :D

Answer 14

okay so the reflection would be like this (I'll draw it) right ?

Answer 15

yeah. Now what I drew was the rotation. The reflection on the y-axis looks a little different too: