Answer:
1.m∠1 + m∠7 = 143° + 37° = 180°
2. a ∥ b is S.S. ext. ∠s suppl.
Explanation:
m<1 + m<7 = 143 degrees + 37 degrees = 180 degrees
I do rsm as well and an important part that you forgot to take a photo of was the statement :
m∠1=143° and m∠7= 37°.
First we can write m<1 + m<7 and then substitute those angles with their actual degree measure:
143° + 37° = 180 degrees....
Our first statement is
m∠1 + m∠7 = 143° + 37° = 180°
for our second statement
a ∥ b is S.S. ext. ∠s suppl.
Hope this Helps!!! :)
Let me know in the comments if I should improve on anything or if it was perfect?