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Momo

  • 5 years ago

Describe the locus of all points in a plane that are 9 cm from point M. circle M with a radius of 18 cm, circle M with a radius of 9 cm, square with 9 cm sides, square with 18 cm sides

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  1. Yuki
    • 5 years ago
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    you just follow the definition of a circle circle := the set of all points that are equidistant from a point

  2. Yuki
    • 5 years ago
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    the distance for that point to any point in the set is called the "radius"

  3. Yuki
    • 5 years ago
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    and the point is called the center

  4. Yuki
    • 5 years ago
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    long story short, the locus of all points 9cm from a point is a circle with radius 9cm

  5. Yuki
    • 5 years ago
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    does that help ?

  6. momo
    • 5 years ago
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    a little bit :), i'm still not sure how i solve it though

  7. Yuki
    • 5 years ago
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    you don't solve it , it's a definition. if you want to prove that it is not a square though, it is possible. are you interested ?

  8. momo
    • 5 years ago
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    sorry, the stuff about circles and squares after the first sentence, are possible answers

  9. Yuki
    • 5 years ago
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    yes, I assumed that.

  10. momo
    • 5 years ago
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    oh okay, i was just making sure that was clear cuz the sentence looked strange to me haha! okay i understand now :) thank you!

  11. Yuki
    • 5 years ago
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    no problem :)

  12. momo
    • 5 years ago
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    Describe the locus of all points that are 3 cm from a point m. so would this be the same concept?

  13. Yuki
    • 5 years ago
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    yep, circle with radius 3

  14. momo
    • 5 years ago
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    but that isn't one of my options...

  15. momo
    • 5 years ago
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    oh wait! yeah it is lol sorry

  16. momo
    • 5 years ago
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    i do have some confustion about some of my options though

  17. momo
    • 5 years ago
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    a line, 3 cm from line m, a pair of parallel lines, each parallel to and 3 cm from line m, a sphere with a radius of 3 cm, or a circle with a diameter of 6 cm

  18. Yuki
    • 5 years ago
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    momo, it would be helpful to separate the answers from the questions by pressing enter like this

  19. Yuki
    • 5 years ago
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    so is the question what is the locus of all the points 3cm away from line m ?

  20. momo
    • 5 years ago
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    Describe the locus of all points that are 3 cm from a point m.

  21. momo
    • 5 years ago
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    sorry for the confusion

  22. Yuki
    • 5 years ago
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    if it is in a plane, then it is a circle with radius 3 if it is in a space, then it is a sphere with radius 3

  23. Yuki
    • 5 years ago
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    it you are looking for the locus of all points 3cm away from a line, then you have two lines that are parallel to line m one 3cm above it and the other 3cm below it

  24. Yuki
    • 5 years ago
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    if you draw a picture it makes sense does that help ?

  25. momo
    • 5 years ago
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    yes thank you!!

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