题目

In the middle of the room stands  ___ table A. beautiful wooden round  B.round wooden beautiful  C. wooden round beautiful  D. beautiful round wooden 答案：D如图，梯形ABCD中，AB∥CD，AD=BC=DC，∠A=45 °，DE⊥AB于E，且DE=1，（1）求梯形ABCD的周长；（2）求梯形ABCD的面积﹒