选择题
2016 AMC 8 Problem 2: Triangle in a Rectangle
In rectangle ABCD, AB = 6 and AD = 8. Point M is the midpoint of AD. What is the area of triangle AMC?
2016 AMC 8 第2题：矩形中的三角形
在矩形ABCD中，AB=6，AD=8。M点为AD的中点。三角形AMC的面积是多少
A.
12
B.
15
C.
18
D.
20
E.
24