如图，正方形ABCD的边长为4，将一个足够大的直角三角板的直角顶点放于点A处，该三角形板的两条直角边与CD交于点F，与CB延长线交于点E，四边形AECF的面积是

题干

如图，正方形ABCD的边长为4，将一个足够大的直角三角板的直角顶点放于点A处，该三角形板的两条直角边与CD交于点F，与CB延长线交于点E，四边形AECF的面积是（）

A：16

B：12

C：8

D：4

上一题下一题 0.0难度选择题更新时间:2019-02-23 05:53:58

A

Shopping Guide in Central Mall
Floors	Articles
6	Restaurant /Coffee shop/ Tea house
5	Children's pleasure ground/ Game center
4	Electrical equipment, clocks and watches/ Writing materials and office supplies
3	Men's clothing /Bedding
2	Women's clothing/ Children's clothing
1	Fruit, vegetables, meat, eggs, drinks, cooked food, etc. /Kitchen ware
Bushiness hours Weekdays:8:30am—6:30pm Weekends:9:00am—9:00pm