[填空题]
The quadrilateral ABC6 a9af.g/w4zwh bmqb* D is shown below, wherom.j /mphenb2+zw w:mg3 i 51ke AB = 56m, AD =122 m, CD =40 m, and the am/nh + z:51i.g om2wjb wme3pkngles and are and respectively.
1.Find the length of line AC. m
2.Find the area of triangle ACD. 3.Find the angle . Give your answer in degrees correct to one
decimal place. 4.Find the shortest distance between point B and the line AC. m
5.Find the length of the perimeter of triangle ABC. m