AMC8 2001
AMC8 2001 · Q11
AMC8 2001 · Q11. It mainly tests Area & perimeter, Coordinate geometry.
Points A, B, C, and D have these coordinates: A(3,2), B(3,-2), C(-3,-2) and D(-3,0). The area of quadrilateral ABCD is
点 A、B、C 和 D 的坐标分别是:A(3,2)、B(3,-2)、C(-3,-2) 和 D(-3,0)。四边形 ABCD 的面积是
(A)
12
12
(B)
15
15
(C)
18
18
(D)
21
21
(E)
24
24
Answer
Correct choice: (C)
正确答案:(C)
Solution
The lower part is a 6 × 2 rectangle with area 12. The upper part is a triangle with base 6 and altitude 2 with area 6. The total area is 12 + 6 = 18.
下部是一个 $6 \times 2$ 的矩形,面积为 12。上部是一个底为 6、高为 2 的三角形,面积为 6。总面积为 $12 + 6 = 18$。
Topics
Related Questions
Practice full AMC exams on amcdrill.
Try full-length practice and diagnostics at www.amcdrill.com.