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Pagen13

  • one year ago

If measure of angle m<7=100degrees find measure of angle 3

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  1. Pagen13
    • one year ago
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  2. mathstudent55
    • one year ago
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    You see the light-blue arrowheads on the two lines? What do they mean about the lines?

  3. Pagen13
    • one year ago
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    They are congruent

  4. mathstudent55
    • one year ago
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    |dw:1444525882695:dw|

  5. mathstudent55
    • one year ago
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    |dw:1444525960356:dw|

  6. mathstudent55
    • one year ago
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    What do the circled arrowheads above tell you about the lines? Lines are not congruent. Congruent refers to things that can be measured, such as angles, line segments, triangles, etc. When they are congruent, they have the same measure. Lines have infinite length. We don't use the term congruent with lines.

  7. mathstudent55
    • one year ago
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    Those two arrow heads mean the lines are parallel.

  8. mathstudent55
    • one year ago
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    Here is a postulate: If two parallel lines are cut by a transversal, then corresponding angles are congruent.

  9. Pagen13
    • one year ago
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    Okay but how do we get the angle 3

  10. mathstudent55
    • one year ago
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    When to lines are cut by a transversal, what are corresponding angles?

  11. mathstudent55
    • one year ago
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    Corresponding angles are on the same side of the transversal, and on the same relative position to the two lines.

  12. mathstudent55
    • one year ago
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    Angles 1 and 5 are corresponding angles. Since the lines are parallel, angles 1 and 5 are congruent. |dw:1444526239058:dw|

  13. mathstudent55
    • one year ago
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    Angles 2 and 6 are corresponding angles. Since the lines are parallel, angles 2 and 6 are congruent. |dw:1444526291617:dw|

  14. mathstudent55
    • one year ago
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    Angles 4 and 8 are corresponding angles. Since the lines are parallel, angles 4 and 8 are congruent. |dw:1444526333827:dw|

  15. Pagen13
    • one year ago
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    Oh okay thank you

  16. mathstudent55
    • one year ago
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    Using the 3 figures just above and the explanation of corresponding angles & the postulate, what can you conclude about angles 3 and 7?

  17. mathstudent55
    • one year ago
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    You're welcome.

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