Results 1 to 2 of 2

Math Help - 3 Math questions with pics.

  1. #1
    Junior Member
    Joined
    Oct 2008
    Posts
    73

    3 Math questions with pics.

    18. Pic 4. Jennifer is designing a quilt. The pattern for one part of the quilt is shown below in the rectangle.

    Given: ABC~EBF
    AB = BC

    What is the length of EF?

    A. 5 inches
    B. 6 inches
    C. 10 inches
    D. 12 inches

    19. Pic 5. Are the triangles below similar? If so, identify by which method.

    A. AA Similarity Theorem
    B. SAS Similarity Theorem
    C. SSS Similarity Theorem
    D. The triangles are not similar

    20. Pic 6. Are the triangles below similar? If so, identify by which method.

    A. AA Similarity Theorem
    B. SAS Similarity Theorem
    C. SSS Similarity Theorem
    D. The triangles are not similar
    Attached Thumbnails Attached Thumbnails 3 Math questions with pics.-pic-4.jpeg   3 Math questions with pics.-pic-5.jpeg   3 Math questions with pics.-pic-6.jpeg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    Nov 2008
    Posts
    44

    3 Math questions with pics.

    First off, are you sure it's ABC~EBF and not ADC~EBF? I don't think from the looks of things like ABCX is a triangle.

    Assuming it is ADC~EBF, how about this for the first one below:
    Since (1) AC cuts right through the middle of the rectangle, (2) triangle EBF is similar to triangle ADC, and (3) Triangle EBF touches triangle ADC and two sides of the rectangle, B is the center of the rectangle. That means the height of EBF would be half the height of ADC, and the width of EBF would be half the width of ADC. Since you're given the height and width of ADC, you can solve for the height and width of EBF. And once you know the height and width of EBF, use the pythagorean theorem to solve for the length of EF, the third side.

    - Steve J
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Sine rule help! + pics
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: June 22nd 2009, 04:44 AM
  2. 4 Math Questions
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: January 5th 2009, 01:38 PM
  3. Math Questions 5
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: December 17th 2008, 11:46 AM
  4. Math Questions 1
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: December 17th 2008, 10:26 AM
  5. Two Math Questions.
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: November 6th 2008, 11:39 AM

Search Tags


/mathhelpforum @mathhelpforum