In the diagram below, line AB is parallel to line CD. The measure of 
∠∠ABC is 28° and the measure of ∠∠EDC is 42°. Find the measure of∠∠CED. Explain why you are correct by presenting an informal argument that uses the angle sum of a triangle. 
what is the measure of ∠∠CED is ? And Explain why ?
                                             
                                          
                                          
                                        
											 
			                  