anonymous
  • anonymous
HELP ME PLEASE.
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Elsie is making a quilt using quilt blocks like the one in the diagram.
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
a. How many lines of symmetry are there? b. Does the quilt square have rotational symmetry? If so, what is the angle of rotation?

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anonymous
  • anonymous
is it 8 or 4 lines of symmetry?
anonymous
  • anonymous
10
anonymous
  • anonymous
I think there are four lines of symmetry (y=0, y=x, x=0, y =-x) through the center. Only rotations of 90 degrees or multiples there off will be equivalent.
anonymous
  • anonymous
I'm not sure how you define line of symmetry. If it reflection through the line that gives the same shape in the same position its 4, if its a reflection through one of the outer lines of the square, then the shape will look the same but be in a new position. So we need to see the exact definition. Normally when dealing a function and we talk about lines of symmetry we are talking about the first kind.
anonymous
  • anonymous
http://www.mathsisfun.com/definitions/line-symmetry.html

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