# SAT Math Multiple Choice Question 953: Answer and Explanation

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**Question: 953**

**5.**

*x*?

- A.
- B. 6
- C.
- D. 8

**Correct Answer:** A

**Explanation:**

**A**

**Difficulty:** Easy

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

**Strategic Advice:** Whenever you see a 45 degree angle, look for a special right triangle. On Test Day, don't forget that you can refer to the formula page at the beginning of the math section.

**Getting to the Answer:** The measure of the third angle is, so the triangle is a 45-45-90 triangle. The side lengths of a 45-45-90 triangle are always in the ratio, so the hypotenuse (which happens to be *x* in this question) is the length of a leg, multiplied by. This means, which is (A).