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29 October, 23:40

The sum of 2 interior angles of a triangle is 140°. What is the measure of the third interior angle? A. 220° B. 40° C. 30° or D. 50°?

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  1. 29 October, 23:42
    0
    40°, the sum of all interior angles in a triangle should add up to 180°
  2. 29 October, 23:59
    0
    the 3 interior angles of a triangle need to = 180

    so 180-140 = 40

    the 3rd angle is 40 degrees
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