As is shown in picture AB⊥CD、AB=12cm,CD=7cm.What is the area of quadrilateral ABCD?

问题描述:

As is shown in picture AB⊥CD、AB=12cm,CD=7cm.What is the area of quadrilateral ABCD?
翻译,

如图所示:AB⊥CD、AB=12cm,CD=7cm.求四边形ABCD的面积.⊥ 什么意思?AB垂直于CD。AB⊥CD、AB=12cm,这个呢?这是两个条件。按照此题的意思应该是一个菱形。