Seudónimo Seudónimo 26-12-2017 Mathematics contestada Two lines intersect at a point, forming ∠1 , ∠2 , ∠3 , and ∠4 . ∠1 and ∠3 are vertical angles. ∠2 and ∠4 are vertical angles. m∠1=70° What is the measure of ∠2 ? 20° 70° 90° 110°