Mathematics
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OpenStudy (highschoolmom2010):
sequence of ridged motion
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OpenStudy (highschoolmom2010):
OpenStudy (highschoolmom2010):
sorry for the small picture
ganeshie8 (ganeshie8):
i think, its a composition of 90 degree Clockwise rotation, followed by a translation of <-1, 0>
ganeshie8 (ganeshie8):
option C
ganeshie8 (ganeshie8):
see if that makes some sense
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OpenStudy (highschoolmom2010):
can you explain a little how to do this for future reference?
ganeshie8 (ganeshie8):
u will have to see it for urself, let me try to explain anyways
OpenStudy (highschoolmom2010):
im really lost on the whole function notation of reflections.
ganeshie8 (ganeshie8):
its okay, lets take step by step
ganeshie8 (ganeshie8):
First step : focus on one point A
wat are the coordinates of point A ?
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OpenStudy (highschoolmom2010):
A(2,-2)
ganeshie8 (ganeshie8):
yes !
ganeshie8 (ganeshie8):
Secodn step : 90 clockwise is same as 270 counter clockwise
so, after 90 degree clockwise,
A(2, -2) will move to (-2, -2)
ganeshie8 (ganeshie8):
cuz, 270 couter clock wise rotation :-
(x, y) --> (y, -x)
ganeshie8 (ganeshie8):
let me knw once u make peace wid step 2
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OpenStudy (highschoolmom2010):
I think that I am
ganeshie8 (ganeshie8):
cool :)
Step3 : wat are the coordinates of X ?
OpenStudy (highschoolmom2010):
(-3,-2)
ganeshie8 (ganeshie8):
and where did A move to after 90 clock wise rotation ?
ganeshie8 (ganeshie8):
A moved to (-2, -2) after 90 degree clockwise rotation
since X is at (-3, -2),
to move A to X, you need to do T<-1, 0>
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OpenStudy (highschoolmom2010):
ohh ok I see
ganeshie8 (ganeshie8):
So overall it is
1) rotate 90 clockwise , and
2) translate left by 1 grid
ganeshie8 (ganeshie8):
T<-1, 0> is same as translating left by 1 grid
OpenStudy (highschoolmom2010):
ok I get it now:DD TY sooo much @ganeshie8
ganeshie8 (ganeshie8):
glad to hear :))