Question

Please help! Complete answers please.

Answer 1

The interior angles of ∆AUL (or any triangle for that matter) sum to 180°, so

∠3 + 20° + 57° = 180°

===> ∠3 = 103°

Angles ∠3 and ∠4 occur on the same ray LP, so they are supplementary to one another. In other words,

∠3 + ∠4 = 180°

so that

∠4 = 180° - 103° = 77°

Answer 2

m3 = 103 degrees

m4 = 77 degrees

Explanation:

comment if you want me to explain please :)