Question

Three lines intersect at point O. Find m∠1+m∠2+m∠3.

Answer 1

if you add all the m 1,2 and 3 they would equal to 180 degrees

Answer 2

180°

Explanation:

`m \angle 3 = m \angle \: 4..(vertical \: \angle s)...(1) \\ now \\ m \angle 1 + m \angle 4 + m \angle 2 = 180 \degree\\..(straight \: line \: \angle s) \\ m \angle 1 + m \angle 3 + m \angle 2 = 180 \degree..[from \: (1)] \\ \purple {\boxed {\bold {m \angle 1 + m \angle 2 + m \angle 3 = 180 \degree}}}`