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Which transformations maps the strip pattern onto itself?

a horizontal translation only 
B. a horizontal translation and a 180 degree rotation 
C. a horizontal translation and a glide reflection <---My Answer
D. a horizontal translation and a reflection across a vertical line 

 Jan 11, 2019

B and D are wrong


What is a 'glide reflection'?

 Jan 11, 2019

A glide reflection is "a transformation consisting of a translation combined with a reflection about a plane parallel to the direction of the translation".

Guest Jan 11, 2019

There is no plane here as it is 2 dimensional, can I swap 'plane' for 'line'  I guess I can

and if so then you (or the asking guest) is correct.  C is right.

Melody  Jan 12, 2019

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