# SAT Math Multiple Choice Question 954: Answer and Explanation

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**Question: 954**

**6.**

In the figure above,,, andall intersect. What is the value of *n*?

- A. 30
- B. 40
- C. 50
- D. 60

**Correct Answer:** B

**Explanation:**

**B**

**Difficulty:** Easy

**Category:** Additional Topics in Math / Geometry

**Strategic Advice:** Use your knowledge of angle properties to quickly find the answer. Angles that form a straight line sum to 180°, and vertical angles have equal measures.

**Getting to the Answer:** The three angles on the left side form a straight line, so. Solving for *m* gives 40. The angles marked *m*° and *n*° are vertical angles, so *n* = 40 as well. (B) is correct.