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RaquelKelli01

  • one year ago

Can someone help me with this Perpendicular Lines problem? This is so confusing.

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  1. raquelkelli01
    • one year ago
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  2. jim_thompson5910
    • one year ago
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    I'm guessing they want you to use a compass and straight-edge?

  3. raquelkelli01
    • one year ago
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    Yes.

  4. raquelkelli01
    • one year ago
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    I know how to use it, but this triangle is killing me.

  5. jim_thompson5910
    • one year ago
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    let's say we have this at first |dw:1443494963309:dw|

  6. jim_thompson5910
    • one year ago
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    how would we draw a line through C such that it is perpendicular to AB?

  7. raquelkelli01
    • one year ago
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    I'd place the compass point below point C and make the arcs on each side, and then above C would make another arc from the other two arcs, then draw a line through the arc with a ruler?..if that even makes sense. .-. I'm sorry.

  8. jim_thompson5910
    • one year ago
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    good, that's the same as drawing a circle with C at its center and making sure this circle crosses the line segment AB at 2 spots something like this maybe |dw:1443495436902:dw|

  9. jim_thompson5910
    • one year ago
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    mark the two intersections as D and E |dw:1443495476253:dw|

  10. jim_thompson5910
    • one year ago
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    let's erase the circle to make things a bit cleaner |dw:1443495536840:dw|

  11. jim_thompson5910
    • one year ago
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    the idea is to construct the perpendicular bisector of segment DE that perpendicular bisector of segment DE will go through C and be perpendicular to AB

  12. raquelkelli01
    • one year ago
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    That makes sense, but I still don't understand this triangle.

  13. jim_thompson5910
    • one year ago
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    well if we connect A with C and B with C, we get this triangle |dw:1443495742548:dw|

  14. jim_thompson5910
    • one year ago
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    the same idea will apply but now we just have 2 extra segments

  15. raquelkelli01
    • one year ago
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    So I'll do the same at the other corners?

  16. jim_thompson5910
    • one year ago
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    yes, imagine flipping the triangle so that each side is laying horizontally to do each perpendicular line

  17. raquelkelli01
    • one year ago
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    So, I'd draw a line down the middle and make the arcs on the triangle corners just like I would with a straight line?

  18. jim_thompson5910
    • one year ago
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    |dw:1443496042024:dw|

  19. jim_thompson5910
    • one year ago
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    extend out BC |dw:1443496100352:dw|

  20. raquelkelli01
    • one year ago
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    Quick question, why does every tutorial I've seen have a perfect looking triangle and mine is all uneven?

  21. jim_thompson5910
    • one year ago
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    draw a circle with center A |dw:1443496133357:dw|

  22. jim_thompson5910
    • one year ago
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    they are most likely using some kind of software to help draw clean lines

  23. jim_thompson5910
    • one year ago
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    I used the line tool on here

  24. jim_thompson5910
    • one year ago
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    mark D and E |dw:1443496190635:dw|

  25. jim_thompson5910
    • one year ago
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    |dw:1443496208995:dw|

  26. jim_thompson5910
    • one year ago
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    dra w |dw:1443496220712:dw|

  27. jim_thompson5910
    • one year ago
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    *draw arcs centered at D and E

  28. jim_thompson5910
    • one year ago
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    then draw a straight line through those arc intersection points |dw:1443496316935:dw|

  29. jim_thompson5910
    • one year ago
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    you'll repeat these steps for AB and AC imagine placing those segments along the horizontal portion

  30. raquelkelli01
    • one year ago
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    So I'm going to do that for every point on the triangle?

  31. jim_thompson5910
    • one year ago
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    correct

  32. raquelkelli01
    • one year ago
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    Okay, thank you for all your help!!!

  33. jim_thompson5910
    • one year ago
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    no problem

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