anonymous
  • anonymous
What is the difference between rotation about the origin and rotation about the center of the figure?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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LynFran
  • LynFran
rotation about the origin is the point (0,0) and rotation about the center is any point(x,y)
LynFran
  • LynFran
for the origin x=0 & y-=0
LynFran
  • LynFran
for the center x can equal any value also y...example (2,9) x=2 y=9

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anonymous
  • anonymous
So this would be about the center?
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anonymous
  • anonymous
@LynFran
LynFran
  • LynFran
ok what exactly is the question i find that for the point H with H' and F with F' \[\left[\begin{matrix}1 & 0 \\ 0 & -1\end{matrix}\right]\] ...what i would also like to know if the topic is matrices
anonymous
  • anonymous
Here is the full question: Carlos performed a transformation on trapezoid EFGH to create E'F'G'H', as shown in the figure below: [insert picture i posted before] What transformation did Carlos perform to create E'F'G'H'? and the answer choices are: A. Rotation of 90 degrees counterclockwise about the origin B. Rotation of 90 degrees counterclockwise about the center of the figure C. Rotation of 90 degrees clockwise about the origin D. Rotation of 90 degrees clockwise about the center of the figure
anonymous
  • anonymous
@LynFran So I assume that it would be 90 degrees clockwise, correct? But I'm not sure if it is about the origin or about the center.
Loser66
  • Loser66
|dw:1435026349286:dw|
Loser66
  • Loser66
to go from F to F' , you need go on which direction to get 90 degree? |dw:1435026460507:dw|
anonymous
  • anonymous
counter clockwise
Loser66
  • Loser66
yup, but you got what it means, right?
anonymous
  • anonymous
Yeah I understand that part now. I just dont understand what it is rotating "about"
Loser66
  • Loser66
you have 90 degree, right? and 2 options: about origin and about center of the figure, right? if about origin, that is : all vertices of the original one perpendicular with the corresponding vertices of the new one through origin. Like what I draw, FO \(\perp\) F'O
Loser66
  • Loser66
if you link AO and A'O, you can see they form a 90 degree also.
Loser66
  • Loser66
If about center of the figure, first off, you have to find that center, then, link the vertices like what you did with O. Dat sit
anonymous
  • anonymous
So then it would be about the center of the figure?
Loser66
  • Loser66
|dw:1435026925440:dw|
Loser66
  • Loser66
Nope, your problem is about origin
anonymous
  • anonymous
Oh I think I understand
anonymous
  • anonymous
Thank you
Loser66
  • Loser66
ok
anonymous
  • anonymous
Wait a second I just entered that answer (A) and it said it was wrong
Loser66
  • Loser66
http://www.regentsprep.org/regents/math/geometry/gt4/rotate.htm
Loser66
  • Loser66
http://www.onlinemathlearning.com/rotation-transformation.htm I don't know why it said wrong. :(
anonymous
  • anonymous
basically if you turn it around the origin the position of the shape and position of the shape on the grid would change but if you turn it on its center it just changes the position of the shape

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