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Brad1996

  • 3 years ago

Geometry help please? G is the incenter of Δ ABC. m∠A = 58 m∠B = 64 m∠C = 58 What is the m∠BCE? 36 27 32 29

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  1. Brad1996
    • 3 years ago
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    picture ina sec

  2. Brad1996
    • 3 years ago
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  3. Brad1996
    • 3 years ago
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    How do I solve this?

  4. Brad1996
    • 3 years ago
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    that can't be right i ended up with 119 :l

  5. CliffSedge
    • 3 years ago
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    What do you know about incenters?

  6. jazy
    • 3 years ago
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    m∠A = 58 m∠B = 64 m∠C = 58 The triangle has it's 3 Medians marked(D,E,F). A median cut's exactly half way from a vertex to the opposite side... It bisects the line segment and angle. So angle BCE would be half of angle C's measurement.

  7. Brad1996
    • 3 years ago
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    its 29?

  8. jazy
    • 3 years ago
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    Yes.

  9. Brad1996
    • 3 years ago
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    yea because it wants angle c... And C is bisected so its halfed

  10. nubeer
    • 3 years ago
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    i think angle at C is getting bisect.. which means its dividing the angle in half.. so just half the angle of C

  11. Brad1996
    • 3 years ago
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    which is 29

  12. jazy
    • 3 years ago
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    Exactly. :D

  13. Brad1996
    • 3 years ago
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    thanks guys :)

  14. jazy
    • 3 years ago
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    welcome (:

  15. Brad1996
    • 3 years ago
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    yea it was 29 I just sent my quiz

  16. CliffSedge
    • 3 years ago
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    @jazy, the incenter is the intersection of the angle bisectors. The medians are not involved. "A median cut's exactly half way from a vertex to the opposite side... It bisects the line segment and angle." This statement is false.

  17. jazy
    • 3 years ago
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    http://www.icoachmath.com/image_md/Median%20of%20a%20Triangle1.jpg

  18. Brad1996
    • 3 years ago
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    yes incenter is the bisectors and circumcenter is the perpandicular bisectors. I do not know where the medians are involved

  19. Brad1996
    • 3 years ago
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    what is the median of a triangle?

  20. CliffSedge
    • 3 years ago
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    A median bisects a side of the triangle, but it doesn't necessarily also bisect the angle. |dw:1350322892891:dw|

  21. CliffSedge
    • 3 years ago
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    In triangle ABC (that I drew), AN is an angle bisector and passes through the incenter of the triangle. CM is a median and makes AM = MB. It is not also an angle bisector of ACB. ACM =/= MCB.

  22. Brad1996
    • 3 years ago
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    lagged

  23. CliffSedge
    • 3 years ago
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    |dw:1350323109326:dw| correction to the drawing.

  24. Brad1996
    • 3 years ago
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    I see so it intersects at the middle of a line but doesnt always bisect

  25. CliffSedge
    • 3 years ago
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    Medians bisect sides. The three medians intersect at the centroid. Angle bisectors bisect angles. The three angle bisectors intersect at the incenter.

  26. Brad1996
    • 3 years ago
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    alright i got yea

  27. CliffSedge
    • 3 years ago
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    Play around over here for a while http://www.mathopenref.com/triangleincenter.html @jazy you too.

  28. jazy
    • 3 years ago
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    k, thanks for the explanation @CliffSedge (:

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