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centre of rotation .......help!!

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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centre of rotation .......help!!

by marmar29 » Mon Feb 21, 2011 10:55 pm
hi all
im always stucking in finding the centre of rotation when it is required
do u have any simpleeee way to teach my Ss,
if the object coordinates are A= ( 1,1) ,B = (3,1),C =(1,4)
& the image is A' = (9,4) B'= (6,4) , c'= 6,2
eager for yr responses !!
cheers
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by VivianKerr » Wed Feb 23, 2011 2:57 pm
I recommend you draw the coordinate plane and plot the points. It's much, much easier to visualize on scratch paper!

Check out this fun little animation. It will help you visualize: https://www.absorblearning.com/media/ite ... n?quick=ha

-https://www.mathwords.com/c/center_of_rotation.htm
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