Read the following SAT test question, then click on a button to select your answer.
What is the area of the triangle in the figure above?
A.4.0
B.7.5
C.8.0
D.8.5
E.15.0
答案和解析
Correct Answer: B
Here's Why:
Figures in a Coordinate Plane
The figure provides all the information you need to answer the question.
What Is the Question Asking?
You are asked to figure out the area of a triangle that is defined by the points in a coordinate plane.
What Do You Know?
The triangle in the figure is a right triangle with the right angle at the lower left.
Because it is a right triangle, its base and height are the two sides that form the right angle.
The area of a triangle isbh.
The base of the triangle extends from point (0, 0) to point (5, 0). So it is 5 units long.
The height of the triangle extends from point (0, 0) to point (0, 3). So it is 3 units long.
Area =bh=(3)(5)= (15)= 7.5
Difficulty: Medium
Question Type: Standard Multiple Choice
SAT数学考试题题型则分为选择题和填写空格题两种，考察范围包括算术及应用题、代数及函数、几何及度量衡、数据分析、统计学及基础概率论。大家在备考自己的SAT数学考试的时候，可以练习一下相关的解法。