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Geometry and Trigonometry
Difficulty: Easy
In , the measure of is and the measure of is . What is the measure of ?
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Explanation
Choice C is correct. The triangle angle sum theorem states that the sum of the measures of the interior angles of a triangle is . It's given that in , the measure of is and the measure of is . It follows that the measure of is , or .
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect. This is the sum of the measures of and , not the measure of .
Choice D is incorrect and may result from conceptual or calculation errors.