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nuccioreggie

  • one year ago

Find the measure of angle x in the figure below: Two triangles are shown such that one triangle is inverted and share a common vertex. The lower triangle has two angles at the base marked as 75 degrees each. The angle at the vertex of the inverted triangle at the top is marked as x degrees. 15° 25° 30° 60°

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  1. nuccioreggie
    • one year ago
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    @Michele_Laino. Here it is

  2. welshfella
    • one year ago
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    use the fact that the 3 angles in a triangle add up to 180 degrees

  3. Michele_Laino
    • one year ago
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    hint: |dw:1433527344887:dw|

  4. welshfella
    • one year ago
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    also when 2 lines cross the opposite angles are equal |dw:1433527397366:dw|

  5. Michele_Laino
    • one year ago
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    we have a pair of vertical angles so we can write: x + 75 +75 = 180

  6. nuccioreggie
    • one year ago
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    Ok im going to work it out

  7. nuccioreggie
    • one year ago
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    I got 30

  8. Michele_Laino
    • one year ago
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    that's right!

  9. nuccioreggie
    • one year ago
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    Is that the correct answer

  10. Michele_Laino
    • one year ago
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    yes!

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