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Math Help - circle help. i hate these.

  1. #1
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    circle help. i hate these.

    Use pic 11 for 11 and pic 12 for 12

    11. Given: CH = 3, DJ = 3, EJ = 3, AJ = 2, mDG = 56 degrees

    AH =

    A. 3
    B. 2
    C. 4
    D. 6

    m<AJD =

    A. 124
    B. 90
    C. 56
    D. 34

    12. Given: mAD = 100 degrees, mAB = 40 degrees, mBC = 80 degrees

    mCD =

    A. 140
    B. 100
    C. 160
    D. 120

    m<C =

    A. 70
    B. 20
    C. 50
    D. 40
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by dgenerationx2 View Post
    Use pic 11 for 11 and pic 12 for 12

    11. Given: CH = 3, DJ = 3, EJ = 3, AJ = 2, mDG = 56 degrees

    AH = 2, because BC=ED, and congruent chords are equidistant from the center of a circle

    A. 3
    B. 2
    C. 4
    D. 6

    m<AJD = 90 degrees. If a radius bisects a chord, then it is perpendicular to the chord.

    A. 124
    B. 90
    C. 56
    D. 34



    12. Given: mAD = 100 degrees, mAB = 40 degrees, mBC = 80 degrees

    mCD = 360 - (100 + 40 + 80) = 140

    A. 140
    B. 100
    C. 160
    D. 120

    m<C = 1/2 arc AB = 20. The measure of an inscribed angle is one-half the measure of its intercepted arc.

    A. 70
    B. 20
    C. 50
    D. 40
    ..
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  3. #3
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    thanks

    thanks a lot again.
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