Question in-965
In , the measure of is and the measure of is . What is the measure of ?
In △ X Y Z , the measure of ∠ X is 23 ° and the
Medium-difficulty · SAT Math · Lines, Angles, and Triangles — Triangle sum theorem. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer 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.
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