选择题
2003 AMC 8 Problem 25: Folded Triangle Area
In the figure, the area of square WXYZ is 25 square centimeters. The four smaller squares have sides 1 cm long. In triangle ABC, AB = AC, and when triangle ABC is folded over side BC, point A coincides with O, the center of square WXYZ. What is the area of triangle ABC, in square centimeters?
A.
15/4
B.
21/4
C.
27/4
D.
21/2
E.
27/2