SAT数学Problem Solving练习题（31）
- 2017年07月26日14:07 来源：互联网
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摘要：下面是小站SAT频道为大家整理了SAT数学Problem Solving练习题(31)，供考生们参考，以下是详细内容。
以下是小站SAT频道为大家整理了SAT数学Problem Solving练习题(31)，供考生们参考，以下是详细内容。
Question 31: The AB side of the ABCD trapezoid is 4 and the BC side is 3. What is the area of the triangle ABD?
(a) 4
(b) 7/2
(c) 9/2
(d) 6
(e) 7
Answer: The area of the ABD triangle is 1/2·AB·h, where h is the height from D onto AB, ED.
Since DEB angle is 90o and equal to angle BCD, EBCD is a rectangle and ED = BC = 3
The area is (1/2)·4·3 = 6.
