1. Yes
Alternate Exterior Angle Converse Theorem
2. Yes
Corresponding Angle Converse
3. Yes
Same Side Exterior Angle Converse Theorem~ 142 + 48 = 180 degree
4. No ~ Not enough information is given for l
5. Yes
Alternate Interior Angle Converse Theorem
6. No ~ 125 + 65 = 190 which is not suplementary (180 degree)