Answer:
B. It forms a linear pair with one of the interior angles of the triangle.
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The true statement concerning the exterior angles of a triangle is that it forms a linear pair with one of the interior angles of the triangle.
The exterior angle theorem asserts that the total of the opposing and non-adjacent internal angles of a triangle equals the measurement of each exterior angle.
When one side of a triangle is stretched in such a way that a non-straight angle is produced exterior of the triangle but near to an interior angle, an external angle is formed.
Therefore, we can conclude that the true statement concerning the exterior angles of a triangle is that it forms a linear pair with one of the interior angles of the triangle.
Learn more about the exterior angles of a triangle here:
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