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If the exterior angle is 150, give three examples of possible measures of the interior angles.

a) 30, 60, 150 degrees
b) 90, 45, 15 degrees
c) 120, 30, 75 degrees
d) 180, 60, 90 degrees

1 Answer

3 votes

Final answer:

None of the provided options (a, b, c, d) represent possible measures of interior angles for a triangle with an exterior angle of 150 degrees since the sums do not match the exterior angle, or the angles are not possible for a triangle.

Step-by-step explanation:

The question asks us to find possible measures of interior angles for a triangle with an exterior angle of 150 degrees. By the exterior angle theorem, the sum of the two non-adjacent interior angles must be equal to the exterior angle. Given the options provided:

  • Option a (30, 60, 150 degrees): This cannot be correct since the sum of 30 and 60 equals 90, not 150 degrees.
  • Option b (90, 45, 15 degrees): The sum of 45 and 15 equals 60, which is not equal to the exterior angle of 150 degrees.
  • Option c (120, 30, 75 degrees): Here, 30 and 75 add up to 105, which does not equal the exterior angle of 150 degrees.
  • Option d (180, 60, 90 degrees): This cannot be correct as the interior angles of a triangle cannot include an angle of 180 degrees; a triangle's angles must all be less than 180 degrees and sum up to 180 degrees.

None of the provided options represent possible measures of interior angles for a triangle with an exterior angle of 150 degrees.

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