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Math Help - Geometric Proofs= this time for real

  1. #1
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    Geometric Proofs= this time for real

    Figure posted below at 3rd post.
    1)In the figure above the measure of angle AME is x degrees, then the measure of angle EMB is 180-x degrees.

    My answer is 1267200 inches

    I don't know why I think this is the answer?I know a straight line is 180 degrees. This is a line adjacent to it.

    2) If a central angle is 30 degrees, then the arc it defines is also 30 degrees.

    My answer is Properties of a central angle. Because an arc is equal to central angle.

    3) If a radius bisects a chord, then the lengths of the parts of the radius on either side of the chord are equal.

    This proof is the definition of a radius. But why?

    4) If a circle has a central point M, and both point A and point D are on the circle, then ls_MA and ls_MD will be equal.

    This is a false proof. Therefore, unfounded?

    5) The given points (4, -8), (4, -5), and (-2, -6) make a right triangle

    This is also false proof. Does not make a right triangle. Making it an unfounded statement.

    Please explain to me more on these subjects. Thanks.
    Last edited by KevinVM20; August 9th 2009 at 05:51 AM.
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  2. #2
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    3 Hint) Construct the line segments from the center of the circle to the ends of the chord.
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  3. #3
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    Please help with all questions. Thank you.

    Quote Originally Posted by TKHunny View Post
    3 Hint) Construct the line segments from the center of the circle to the ends of the chord.
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  4. #4
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  5. #5
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    Quote Originally Posted by KevinVM20 View Post
    Please help with all questions. Thank you.
    Well, that kind of attitude will get you some very negative responses.

    Please show effort on one and we can talk.
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  6. #6
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    I did not intend that to be negative in anyway. I even included a smiley face for all thats worth. Getting through the questions thanks for your consideration.

    Quote Originally Posted by TKHunny View Post
    Well, that kind of attitude will get you some very negative responses.

    Please show effort on one and we can talk.
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  7. #7
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    I advice you to show effort or what you have done so people can correct you,that will help better.
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  8. #8
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    Quote Originally Posted by KevinVM20 View Post
    I did not intend that to be negative in anyway.
    Whatever your intent, your actions are not helpful.

    4) Please show the false proof.

    5) Please show the false proof.
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