Thursday, December 31, 2009

Problem 411: Triangle, Median, Angles

Proposed Problem
Click the figure below to see the complete problem 411 about Triangle, Median, Angles.

Problem 411: Triangle, Median, Angles.
See also:
Complete Problem 411
Level: High School, SAT Prep, College geometry

Posted by Antonio Gutierrez at 3:58 PM
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8 comments:

  1. http://geometri-problemleri.blogspot.com/2009/12/problem-59-ve-cozumu.html

    ReplyDelete

  2. draw DE middle line of ABC

    DE = X = 1/2 AC = 6

    ReplyDelete

  5. To Anonymous, March 23, 2010 5:14 AM

    x = 5.443 (Not correct)

    ReplyDelete

  6. Hint : 51+51+78 = 180

    ReplyDelete

  7. I'm korean, i am interested in your math problems,,
    i solved it that way : straight AC so DA parallel ED.. and triangle BEA is isosceles triangle,, finally 1:2=x:12 x=6 am i right?
    i'm sorry i can't write english well,,

    ReplyDelete

  8. To Anonymous, problem #411: Your answer is right (I think that in your solution: DA is parallel to BE)

    ReplyDelete

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