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anonymous

  • one year ago

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  1. YanaSidlinskiy
    • one year ago
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    Hey! Welcome to OpenStudy!! We're glad to have you here as a user! What question do you have so I could help you out more?

  2. dan815
    • one year ago
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    |dw:1438220684816:dw|

  3. jim_thompson5910
    • one year ago
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    |dw:1438221440750:dw|

  4. jim_thompson5910
    • one year ago
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    line t is a perpendicular bisector of segment AB "bisect" means to cut in half, so AB is cut in half. Into two congruent pieces |dw:1438221542735:dw|

  5. jim_thompson5910
    • one year ago
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    "perpendicular" means we have a 90 degree angle |dw:1438221568512:dw| and all right angles are congruent

  6. jim_thompson5910
    • one year ago
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    |dw:1438221591388:dw| what can you tell me about triangle ADC and triangle BDC ?

  7. jim_thompson5910
    • one year ago
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    well my drawing is a bit off, so don't base everything on that

  8. jim_thompson5910
    • one year ago
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    is segment AD congruent to segment DB ?

  9. jim_thompson5910
    • one year ago
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    how about angle ADC and angle BDC are they congruent?

  10. jim_thompson5910
    • one year ago
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    both are 90 degrees, yes

  11. jim_thompson5910
    • one year ago
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    and certainly DC is congruent to itself, ie DC = DC (reflexive property)

  12. jim_thompson5910
    • one year ago
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    so we can use the SAS property of congruence to say that triangle ADC = triangle BDC

  13. jim_thompson5910
    • one year ago
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    finally using CPCTC http://www.mathwarehouse.com/geometry/congruent_triangles/congruent-parts-CPCTC.php we can show that AC = BC |dw:1438221961389:dw|

  14. jim_thompson5910
    • one year ago
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    all of this is basically saying "C is the same distance away from either A or B"

  15. jim_thompson5910
    • one year ago
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    what do you have so far for the paragraph

  16. jim_thompson5910
    • one year ago
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    does my explanation make sense?

  17. jim_thompson5910
    • one year ago
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    so try to write a paragraph based on what was explained above. Write out a rough draft and I'll help you work on the paragraph

  18. jim_thompson5910
    • one year ago
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    show me what you have so far

  19. anonymous
    • one year ago
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    i cant fom anything

  20. jim_thompson5910
    • one year ago
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    what information is given in the problem

  21. jim_thompson5910
    • one year ago
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    yes I see that, but I want to have you write it out in words

  22. jim_thompson5910
    • one year ago
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    that's usually where proofs start from: the information given

  23. jim_thompson5910
    • one year ago
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    "angle 4 is congruent to angle 6" we don't know that yet as it's not given

  24. jim_thompson5910
    • one year ago
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    "line t is a perpendicular bisector" to what?

  25. jim_thompson5910
    • one year ago
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    other than line t, what other segment is shown?

  26. jim_thompson5910
    • one year ago
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    segment AB

  27. jim_thompson5910
    • one year ago
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    so the given information is "line t is a perpendicular bisector of segment AB"

  28. jim_thompson5910
    • one year ago
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    That's where I would start the proof

  29. jim_thompson5910
    • one year ago
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    Then we can move onto the next piece you stated: "angle 4 is congruent to angle 6" how do we know that "angle 4 is congruent to angle 6" ?

  30. jim_thompson5910
    • one year ago
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    they actually are. Scroll up to remember why

  31. jim_thompson5910
    • one year ago
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    why is angle 4 congruent to angle 6 ?

  32. jim_thompson5910
    • one year ago
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    which is what?

  33. jim_thompson5910
    • one year ago
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    no, 90 degrees

  34. jim_thompson5910
    • one year ago
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    perpendicular ----> 90 degrees

  35. jim_thompson5910
    • one year ago
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    perpendicular ----> right angle ----> 90 degrees

  36. jim_thompson5910
    • one year ago
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    line t is a perpendicular bisector of segment AB angle 6 = angle 4 because we have 2 right angles. All right angles are congruent since they are 90 degrees

  37. jim_thompson5910
    • one year ago
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    basically I'm going through the proof I wrote out above. The key is writing it in your own words as if you're explaining it to a teacher, friend, etc.

  38. jim_thompson5910
    • one year ago
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    yeah it should all be here. Try giving it a shot in terms of writing it

  39. jim_thompson5910
    • one year ago
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    yeah so far so good. Try to rewrite in terms of how you would say it

  40. Jaynator495
    • one year ago
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    nope lel

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