Explanation:
1 and 3 are congruent and so are 2 and 4. (Congruent means they have the same degrees.)
Sense we know <2 is 73 degrees let's break it up. 1 and 2 are on the same line, (a line is equal to 180.) So if we take <2 sense we know the degree is 73-180=107 . We do this so we can find the other angles degree.
Answer:
<1 and <3 are 73 degrees.
<2 and <4 are 107 degrees.
