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27 December, 04:58

If two straight lines intersect and one angle is 30 degrees what are the other three angles

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  1. 27 December, 04:59
    0
    Well when 2 lines intersect, there are 4 angles. The opposite angles are the same degrees. Since one angle is 30 degrees, the opposite angle is 30. So 30+30 is 60. Now all the 4 angles added up should be 360 degrees. So 360-60 is 300. Now 300 divided by 2 is 150 so the other 2 angles are 150 degrees.
  2. 27 December, 05:10
    0
    Easey peasy

    oposite angle is equal

    other angles are supplementary (supplementary means add to 180, and a straight line=180 so if you look at 2 lines intersecting and think for a little bit, you wiill see why)

    oposite angle=30

    other angle is adds to 180

    30+other=180

    subtract 30

    other=150

    other is oposite other other

    other=other other

    150=other other

    angles are

    150,30,150
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