Multiple Choice Question (MCQ)

In figure, if \overline{ABC} is a straight line , then x =

  1. ×

    50

  2. ×

    60

  3. 70

  4. ×

    80

  5. ×

    90

Collected in the board: Triangle

Steven Zheng posted 1 month ago


Answer

  1. For a triangle, an exterior angle of a triangle is equal to the sum of its two opposite non-adjacent interior angles.

    In figure,

    130\degree = x +(x-10 )

    Therfore,

    x = 70\degree

Steven Zheng posted 1 month ago

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