![\qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star](https://img.qammunity.org/2023/formulas/mathematics/college/1x4glclvm1qnmwas29oxh1x4n7owljwf2a.png)
To prove two lines parallel, we need to check if the two angles involving the lines acts as some angle pair with defininte property.
In the given figure,
- Angle 3 is congruent to Angle 19
( by Alternate Exterior angle pair )
Hence, the two lines are parallel.
![\qquad \large \sf {Conclusion} :](https://img.qammunity.org/2023/formulas/mathematics/college/sk20b6sig32qnh6i4mb90xh9twkp9yopb6.png)