I'm pretty stuck on some of these quadrilaterals...

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The first one is a parallelogram, the only angle I can find is angle b which is 80, how would find angle a and c?

The second one is also a parallelogram, but I don't know what to do here. I don't know how to find y or x in this problem.

The last one is a kite. FH = 16 in, FH & EG intersects at L, and EG = 20 in, angle FEH = 60degrees.

The main thing I don't get here is find the measure of the lines what does line EF =? And what does FG =? Also how did you find this? One last thing would angle EFG = 60?

Thanks for all your help.