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SAT备考数学练习题(3)

2017年08月01日14:47 来源:互联网
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摘要:为了方便广大考生更好的复习,新东方网综合整理了SAT备考数学练习题(3),以供各位考生考试复习参考,希望对考生复习有所帮助。


sat考试官方网站每日一题小结,以下是SAT数学部分。

SAT备考数学练习题(3)图1

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

In the figure above, x = 60 and y = 40. If the dashed lines bisect the angles with measures of x° and y°, what is the value of z?

A.25

B.35

C.40

D.45

E.50

Correct Answer: E

Here"s Why:

First, add the labeled points A, B, C, D, E, and O to the figure, as shown above. Then segment

bisects

AOC, so m

AOB = m

BOC, and m

AOB + m

BOC = x° = 60°. Thus, m

AOB = m

BOC = 30°. Similarly, m

COD = m

DOE = 20°, because

COD and

DOE are of equal measure and the sum of their measures is y° = 40°. From the figure, it follows that z° = m


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