The measure of ∠B in triangle ABC is 52°
Triangle
A triangle is a polygon with three sides and three angles. Types of triangles are equilateral, scalene, obtuse, right angled triangle.
From the question:
∠C + ∠D = 180° (sum of angle in a straight line)
∠C + 127 = 180
∠C = 53°
Also:
∠A + ∠B + ∠C = 180° (sum of angles in a triangle)
75 + ∠B + 53 = 180
∠B = 52°
The measure of ∠B in triangle ABC is 52°
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