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anonymous
 one year ago
How many lines of symmetry does the figure have?
http://assets.openstudy.com/updates/attachments/55b90c83e4b0adef802b862blollygirl2171438267354354as.jpg
Which letter has rotational symmetry? Q
H
G
A
I think it's 6 and then h and a
anonymous
 one year ago
How many lines of symmetry does the figure have? http://assets.openstudy.com/updates/attachments/55b90c83e4b0adef802b862blollygirl2171438267354354as.jpg Which letter has rotational symmetry? Q H G A I think it's 6 and then h and a

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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The question means: How many lines can you draw through the center of this figure, so that if you fold the figure in half along the line, both sides will be perfectly superimposed?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Here is an example wit a square. dw:1438286601391:dw If you fold the square along that line, you get the two halves exactly on top of each other. That means that is 1 line of symmetry.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Here is another line of symmetry. dw:1438286661309:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Here are the other 2 lines of symmetry. dw:1438286697858:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1A square 4 lines of symmetry.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1With a regular hexagon, you have: dw:1438286789906:dw There are 6 different lines of symmetry.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.06 lines of symatry \

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1I don;t know about the second question bec there are no letters in your hexagon drawing.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yay I was right on that.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@mathstudent55 it is asking which one out of those numbers has rational symmetry, it does not connect with the last connection

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am guessing H and A

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1What do the letters H and A mean? I have no idea.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Oh, I see. It means the letters themselves. It is talking about the shapes of the letters Q, H , G, and A.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Here is letter Q. If you start rotating the letter Q about its center, how much do you need to rotate (how many degrees) until the rotated shape looks like the letter Q, right side up, again? dw:1438287423001:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The answer is that you'd have to rotate Q a full 360 degrees until the little stroke of the rotated Q is on top of the original little stroke. That means the letter Q has no rotational symmetry.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1What about H? dw:1438287647869:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Assuming that the capital H letter has two congruent and parallel vertical strokes positioned at the same height, and the horizontal stroke is the perpendicular bisector of the vertical strokes, then as you start rotating H about its center, when the vertical strokes become vertical again, the figure has rotated onto itself. You don't need a full 360degree rotation for that. All you need is a 180degree rotation. That means H has rotational symmetry.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1438287899566:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Look a t the figure above. At position 1, the H is standing vertically in its normal position. It has not started to rotate yet. Then as you go to positions 2 through 6. you see the H rotating counterclockwise. When it gets to position 6, the H has rotated half a revolution, or 180 degrees. In position 6, the H looks again like an H, so the letter H does have rotational symmetry.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1If you try rotating the G and the A, you will get the same result as you got with the Q. It takes a full revolution for the G and the A to look again like a proper, right side up G and A, so the G and the A, just like the Q, do not have rotational symmetry.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The answers are: 6 H
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