Q&A for How to Measure an Angle Without a Protractor

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  • Question
    What if the line is curvy?
    Donagan
    Top Answerer
    If there is no straight line, there's no angle to measure. (An angle is defined as a figure formed by two "rays," which are straight line segments.)
  • Question
    How do I construct a vertical line?
    Donagan
    Top Answerer
    Use a protractor to draw a line perpendicular to the top or bottom edge of the paper, or measuring with a ruler, draw a line parallel to the sides of the paper.
  • Question
    How how accurate are the results for each method?
    Donagan
    Top Answerer
    Those methods can usually yield more precise angles than a protractor can.
  • Question
    What is the sum of all the angles in a triangle?
    Linnie
    Top Answerer
    All the interior angles of a triangle, no matter what type of triangle it is, add to 180 degrees.
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