1 Answer

Ali Humayun · Answer 1 · 2021-07-21T09:18:54+0000

$\tt Step-by-step~explanation:$

$\tt~1:$

First, let's observe the diagram. line a is parallel to line b, so that means ∠2 and ∠6 are congruent. They are corresponding angles.

$\tt 2:$

If ∠2 and ∠6 measures 78º, then that means the angles that are vertical to these angles, ∠4 and ∠8, are also congruent to each other.

$\large\boxed{\tt Our~final~answer:Angles~4,6,8}$

If you would like to know what the other angles' measures are, you could simply subtract 78º from 180. A straight line measures 180º.

$\large\txt{\tt 180-78=102}$

$\small\boxed{\tt Other~angles'~measures:~102}$

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