Answer with Step-by-step explanation:
We are given that
Line s is parallel to line t.
To prove that : angle 3 and angle 5 are supplementary.
1.
![s\parallel](https://img.qammunity.org/2021/formulas/mathematics/high-school/wp7ltdc9j3im26hzeqhg218h09h632fm3u.png)
![t](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mnshvy9ardk7p3uxs6w9bx3goo3k9x21wx.png)
Reason: Given
2.Angle 1 and angle 3 are supplementary
Reason: Exterior sides in opposite rays
3.
![\angle 1+\angle 3=180^(\circ)](https://img.qammunity.org/2021/formulas/mathematics/high-school/2p5hq63p652m18z9gh2i80337pecytnrd0.png)
Reason: By definition of supplementary
4.
![\angle 1=\angle 5](https://img.qammunity.org/2021/formulas/mathematics/high-school/x6fetx5bdzyqzd6a06z02ym1xcagam7i13.png)
Reason: If lines are parallel , then corresponding angles are equal.
5.
![\angle 3+\angle 5=180^(\circ)](https://img.qammunity.org/2021/formulas/mathematics/high-school/ihajka5y3ll8b5x9031ouif6vg1vvrqmvu.png)
Reason: Substitution
Hence, proved.