位置:首页 > SAT > SAT每日一题 > 正文
SAT官方每日一题附答案和解析[数学](2016年12月8日)
日期:2016-12-08 10:22

(单词翻译:单击)

每日一题

Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

pic 1

Given the parallelogram shown above, what is the value of x°?

A.48°
B.72°
C.108°
D.132°

答案和解析

答案:A

解析:

Choice A is correct. The diagonal through the figure forms a transversal of the upper and lower sides. Since this is a parallelogram, the alternate interior angles are congruent.

pic 2
Below, the alternate interior angle of the 72° angle is labeled.
Now use the interior angle sum property of triangles to solve for the measurement x°. Recall that the interior angles of a triangle have a sum of 180°.
Likewise, adjacent angles of a parallelogram are supplementary. Thus, 72+x+60=180.

分享到