Angles 1 and 2 are "alternate interior" angles, so are congruent.
 ∠1 = ∠2
 2x +20 = 3x +10
 10 = x . . . . . . . . . . .  subtract 2x+10 from both sides
The measure of ∠1 is ...
 ∠1 = 2x +10 = 2(10) +20 . . . . . degrees
 ∠1 = 40°
Answer from: Quest
what is the original number? you forgot to add it.
Answer from: Quest
the answers are in the images, i received 100% on this assignment. hope this !
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