Correct answer: 45
(parsed from the explanation — this source omits an answer key
for this item)
Explanation
45 The correct answer is . An isosceles right triangle has a right angle and two legs of equal length. In the triangle shown, one angle is a right angle and the two 15 legs each have a length of . Thus, the given triangle is an isosceles right triangle. In an isosceles right triangle, the measures of the two non-right angles 45° 45 are . It follows that the value of x is .
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