According to the properties of exterior angles of triangles, the measure of an exterior angle of a triangle is equal to the sum of the measures of its remote interior angles.
Let's assume \angle a is one of the remote interior angles of the triangle.
Therefore, the measure of the exterior angle is given by:
\angle b = \angle a + \angle c
Since we know that the measure of \angle b is 142 degrees, we can conclude that:
142 = \angle a + \angle c
However, without knowing the measure of \angle c, we cannot determine the exact value of \angle b just by knowing it is 142 degrees.
Use the properties of exterior angles of triangles to find angle b one hundred forty two degrees
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