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8. When constructing a perpendicular bisector, why must the compass opening be greater 1/2 than the length of the segment?

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    http://www.sonoma.edu/users/w/wilsonst/courses/math_150/c-s/Perp-Bisect.html

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    i don't get it

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    can you explain it to me

  • math - ,

    I can't explain it any better than that web site. What is it that you don't understand?

    Or try this site.

    http://www.mathsisfun.com/geometry/construct-linebisect.html

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    i don't get why the compass has to be open more than 1/2 the length segment

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    Get a compass and try it.

    How else are you going to get arcs above and below the line?

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    so i would answers it like....

    the reason that the compass opening has to be greater than 1/2 of the segment is so it can make arcs.

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    That's a good start. Continue --

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    i don't know how to finish it

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    Where do the arcs have to cross?

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    in the middle

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    Right.

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    so now it would be


    the reason that the compass opening has to be greater than 1/2 of the segment is so it can make arcs. and the arcs would have to cross in the middle so that when go to draw the line it would be straight.

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    Yay! You're right!

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    thank you

  • math - ,

    You're welcome.

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