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adajiamcneal

  • one year ago

Hi guys i need help with a mini project (geometry)please help. Ill throw in a fann+testimonial+and medal for the first help me completely thanks :)

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  1. adajiamcneal
    • one year ago
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  2. adajiamcneal
    • one year ago
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    @perl i already drew the picture and i did #1 i just dont understand the rest

  3. perl
    • one year ago
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    so you did step 1,2,3,4

  4. adajiamcneal
    • one year ago
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    yes and then i answered #1

  5. perl
    • one year ago
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    The distance from a point to a line is the length of the line segment which joins the point to the line and is perpendicular to the line.

  6. perl
    • one year ago
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    |dw:1432845291131:dw|

  7. perl
    • one year ago
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    so you measure distance from a point to a given line by drawing a perpendicular to the given line through the point

  8. perl
    • one year ago
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    and then measuring that perpindicular line segment

  9. adajiamcneal
    • one year ago
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    wait ok so by measuring do you mean like with a ruler or do i measure it with the degrees thing?

  10. adajiamcneal
    • one year ago
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    i have no idea what you are talking about

  11. perl
    • one year ago
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    what i described is the definition of the distance from a point to a line, geometrically

  12. adajiamcneal
    • one year ago
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    ok but in order to measure it what would i do? because i dont get what your saying... im not very good at this stuff

  13. perl
    • one year ago
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    suppose you start with a point P and a line m

  14. adajiamcneal
    • one year ago
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    ok

  15. perl
    • one year ago
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    and you want to find the distance between P and line m

  16. perl
    • one year ago
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    |dw:1432845680701:dw|

  17. perl
    • one year ago
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    Is the distance between P and line m the length of this line segment? |dw:1432845743500:dw|

  18. adajiamcneal
    • one year ago
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    no

  19. perl
    • one year ago
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    no, because the distance between a point P and line m is defined as the *shortest* distance between the point and the line.

  20. perl
    • one year ago
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    and we can find the *shortest* distance by the following construction. draw a perpendicular to line m through P

  21. perl
    • one year ago
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    |dw:1432845856627:dw|

  22. perl
    • one year ago
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    lets call the point where the perpendicular line meets line m , call it T

  23. perl
    • one year ago
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    |dw:1432845922979:dw|

  24. perl
    • one year ago
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    now the distance between point P and line m is the length of PT

  25. adajiamcneal
    • one year ago
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    wait...im suppose to do this in a circle. so heres my drawing which lines would be p and m|dw:1432845934490:dw|

  26. perl
    • one year ago
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    |dw:1432845994103:dw|

  27. adajiamcneal
    • one year ago
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    ok that makes more sence

  28. adajiamcneal
    • one year ago
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    to which m ? or am i connecting them with the perpendicular through P?

  29. perl
    • one year ago
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    i think you should look at each one separately

  30. adajiamcneal
    • one year ago
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    ok

  31. perl
    • one year ago
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    remember in the steps, we set the compass from the center to each radius, and marked off a congruent distance

  32. adajiamcneal
    • one year ago
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    yeah

  33. perl
    • one year ago
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    |dw:1432846265885:dw|

  34. perl
    • one year ago
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    and we are folding a line that is perpindicular to the radius, so we can draw that right angle in

  35. perl
    • one year ago
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    |dw:1432846322550:dw|

  36. perl
    • one year ago
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    let's label the other chord a different letter, so we don't get confused

  37. perl
    • one year ago
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    |dw:1432846357083:dw|

  38. perl
    • one year ago
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    so it follows that the distance from P to chord n is `a`, and the distance from point P to chord m is `a`

  39. adajiamcneal
    • one year ago
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    so is that what i write for #2 or im so confused on how to measure the distance

  40. perl
    • one year ago
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    website is extremely laggy for me

  41. adajiamcneal
    • one year ago
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    its ok i can email you if thats easier

  42. adajiamcneal
    • one year ago
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    ill send it through messages

  43. adajiamcneal
    • one year ago
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    thats what i meant haha

  44. phi
    • one year ago
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    Yes, they want you to measure the distance from the center of the circle to the chord with a ruler. You should get the same distance for both chords. then they want you to measure the length of each chord. (they should be the same length) then you are supposed to guess that "if chords are the *same* distance from the center of a circle, then those chords will have the same length... i.e. be congruent"

  45. perl
    • one year ago
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    |dw:1432847928094:dw|

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