Your uploads (at least from my end) look difficult to interpret. Do you have some clearer pics that you can upload (preferably scans if you have access to the physical copy of the book)?
Hi I need help on these problems so I can study for the midterms explanation would be helpful because I need to know these thanks. I will post my photobucket link since pictures are required.Mobile Uploads Photos by Mistafresco | Photobucket
first write down what it means for M to be the midpoint of SL. Then the problem virtually solves itself.
the second one is almost the same problem at the first one. Write down what it means for EC to bisect those two angles and do a bit of arithmetic.
for 3 go look up the definitions of corresponding and alternate interior angles. Once you know what they are you can pick them out by looking at them.