I honestly don't know how to approach this problem. I am to find the reactions at C and E. Since E is a roller, it will have moment, but since C is a pin, it won't have moment? What exactly do I need to figure out before attempting to write the equations for the reactions? Do I need to find the length of all the sides of the triangles that the truss forms? If so, how do I do that? I also probably need to find out the angles, correct?