Answer:
In the explanation:
Hope this helps!
Explanation:
Because of the vertical angle theorem, ∠1 is also 20°, which means 16, 14, 11, 9, 5, and 7 all equal 20° as well. Because ∠2 & ∠3 and ∠4 & ∠3 are supplementary ( angles adding up to 180° ), 15, 13, 10, 12, 6, and 8 all equal 160°.
1, 16, 14, 11, 9, 5, 7 = 20°
2, 4, 15, 13, 10, 12, 6, 8 = 160°