Question

Given the following diagram, find the required measure.

Given: l | | m
m ∠1 = 140°
m ∠3 = 50°

https://media.glynlyon.com/g_geo_2013/3/page70a.gif

m ∠5 =

40
50
90
140

Answer 1

is it 90?

Answer 2

No.
<1 and <5 are supplementary because they are on the same side of the transversal
So
<1 + <5=180

Answer 3

thnx:)